diff --git a/src/main/java/org/grobid/core/engines/QuantityParser.java b/src/main/java/org/grobid/core/engines/QuantityParser.java
index 7d3c9d43..792fcdb5 100644
--- a/src/main/java/org/grobid/core/engines/QuantityParser.java
+++ b/src/main/java/org/grobid/core/engines/QuantityParser.java
@@ -795,11 +795,11 @@ private static void populateRawOffsetsAndText(Measurement m, List<LayoutToken> t
         m.setRawString(measurementRawOffsetsAndText.getRight().replace("\n", " "));
     }
 
-    private OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, OffsetPosition offsets) {
-        return findSentenceOffset(sentences, offsets);
+    protected OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, OffsetPosition offsets) {
+        return findSentenceOffset(sentences, offsets, 0);
     }
 
-    private OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, OffsetPosition currentMeasureOffset, int firstTokenOffset) {
+    protected OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, OffsetPosition currentMeasureOffset, int firstTokenOffset) {
         List<OffsetPosition> sentencesCurrentMeasure = sentences.stream()
             .filter(sop -> sop.start <= currentMeasureOffset.start - firstTokenOffset
                 && sop.end > currentMeasureOffset.end - firstTokenOffset)
@@ -818,11 +818,11 @@ private OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, Offset
         }
     }
 
-    private OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, Measurement measurement) {
+    protected OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, Measurement measurement) {
         return findSentenceOffset(sentences, measurement, 0);
     }
 
-    private OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, Measurement measurement, int firstTokenOffset) {
+    protected OffsetPosition findSentenceOffset(List<OffsetPosition> sentences, Measurement measurement, int firstTokenOffset) {
         OffsetPosition currentMeasureOffset = measurementOperations.calculateExtremitiesOffsets(measurement);
 
         return findSentenceOffset(sentences, currentMeasureOffset, firstTokenOffset);
diff --git a/src/test/kotlin/org/grobid/core/engines/QuantitiesEngineTest.kt b/src/test/kotlin/org/grobid/core/engines/QuantitiesEngineTest.kt
index f2f8cd27..c4533ecc 100644
--- a/src/test/kotlin/org/grobid/core/engines/QuantitiesEngineTest.kt
+++ b/src/test/kotlin/org/grobid/core/engines/QuantitiesEngineTest.kt
@@ -10,11 +10,18 @@ class QuantitiesEngineTest {
 
     @Test
     fun normaliseAndCleanup_shouldReplaceToken() {
-        val tokens = QuantityAnalyzer.getInstance().tokenizeWithLayoutToken("This \uF0A0 is an interesting") 
+        val tokens = QuantityAnalyzer.getInstance().tokenizeWithLayoutToken("This \uF0A0 is an interesting")
         val tokensNormalised = QuantitiesEngine.normaliseAndCleanup(tokens)
-        
-        assertThat(tokensNormalised, hasSize(tokens.size))
-        assertThat(tokensNormalised[2].text, `is`(" "))
+
+        assertThat(tokensNormalised, hasSize(tokens.size - 2))
+        assertThat(tokensNormalised[1].text, `is`(" "))
+        assertThat(tokensNormalised[2].text, `is`("is"))
+        assertThat(tokensNormalised[0].offset, `is`(0))    
+        assertThat(tokensNormalised[1].offset, `is`(4))    
+        assertThat(tokensNormalised[2].offset, `is`(5))    
+        assertThat(tokensNormalised[3].offset, `is`(7))    
+        assertThat(tokensNormalised[4].offset, `is`(8))    
+        assertThat(tokensNormalised[5].offset, `is`(10))
     }
 
     @Test
diff --git a/src/test/kotlin/org/grobid/core/engines/QuantityParserTest.kt b/src/test/kotlin/org/grobid/core/engines/QuantityParserTest.kt
new file mode 100644
index 00000000..5e0f12ae
--- /dev/null
+++ b/src/test/kotlin/org/grobid/core/engines/QuantityParserTest.kt
@@ -0,0 +1,90 @@
+package org.grobid.core.engines
+
+import org.grobid.core.GrobidModels
+import org.grobid.core.utilities.GrobidConfig.ModelParameters
+import org.grobid.core.utilities.GrobidProperties
+import org.grobid.core.utilities.OffsetPosition
+import org.hamcrest.MatcherAssert.assertThat
+import org.hamcrest.Matchers.`is`
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.BeforeAll
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import java.util.*
+
+class QuantityParserTest {
+    private var target: QuantityParser? = null
+
+    @BeforeEach
+    fun setUp() {
+        target = QuantityParser(GrobidModels.DUMMY, null, null, null)
+    }
+
+    @AfterEach
+    fun tearDown() {
+    }
+
+
+    @Test
+    fun testGetSentence_entityInsideSentence() {
+
+        val sentences: List<OffsetPosition> = listOf(
+            OffsetPosition(0, 3),
+            OffsetPosition(4, 6),
+            OffsetPosition(7, 10)
+        )
+
+        val entityPosition = OffsetPosition(1, 2)
+
+        val foundSentence = target?.findSentenceOffset(sentences, entityPosition)
+
+        assertThat(foundSentence, `is`(sentences[0]))
+    }
+
+
+    @Test
+    fun testGetSentence_entityBetweenSentences() {
+
+        val sentences: List<OffsetPosition> = listOf(
+            OffsetPosition(0, 3),
+            OffsetPosition(4, 6),
+            OffsetPosition(7, 10)
+        )
+
+        val entityPosition = OffsetPosition(2, 5)
+
+        val foundSentence = target?.findSentenceOffset(sentences, entityPosition)
+
+        assertThat(foundSentence, `is`(OffsetPosition(0, 10)))
+    }
+
+    @Test
+    fun testGetSentence_entityIncludingASentence() {
+
+        val sentences: List<OffsetPosition> = listOf(
+            OffsetPosition(0, 3),
+            OffsetPosition(4, 6),
+            OffsetPosition(7, 10)
+        )
+
+        val entityPosition = OffsetPosition(2, 8)
+
+        val foundSentence = target?.findSentenceOffset(sentences, entityPosition)
+
+        assertThat(foundSentence, `is`(OffsetPosition(0, 10)))
+    }
+
+    companion object {
+        @JvmStatic
+        @BeforeAll
+        @Throws(Exception::class)
+        fun before(): Unit {
+            val modelParameters = ModelParameters()
+            modelParameters.name = "bao"
+            GrobidProperties.addModel(modelParameters)
+            GrobidProperties.getInstance()
+        }
+    }
+
+
+}
\ No newline at end of file