diff --git a/GeneralNegEx.Java.v.1.2.05092009/negex_triggers.txt b/GeneralNegEx.Java.v.1.2.05092009/negex_triggers.txt
index b9f3712..6f61870 100755
--- a/GeneralNegEx.Java.v.1.2.05092009/negex_triggers.txt
+++ b/GeneralNegEx.Java.v.1.2.05092009/negex_triggers.txt
@@ -63,6 +63,8 @@ not reveal		[PREN]
 not see		[PREN]
 not to be		[PREN]
 patient was not		[PREN]
+PRN for		[PREN]
+P.R.N. for		[PREN]
 rather than		[PREN]
 resolved		[PREN]
 test for		[PREN]
diff --git a/negex.python/Annotations-1-120.txt b/negex.python/Annotations-1-120.txt
index 798c519..5e540ca 100755
--- a/negex.python/Annotations-1-120.txt
+++ b/negex.python/Annotations-1-120.txt
@@ -2375,3 +2375,7 @@ Report No.	Concept	Sentence	Negation
 119	ABDOMEN:     1. NO FINDINGS TO SUGGEST FDG AVID MALIGNANCY	NO FINDINGS TO SUGGEST FDG AVID MALIGNANCY.	Affirmed
 119	CIRRHOTIC MORPHOLOGY OF THE LIVER AND SMALL UPPER ABDOMINAL  LYMPH NODES ARE LIKELY THE SEQUELA OF CHRONIC UNDERLYING LIVER  DISEASE	CIRRHOTIC MORPHOLOGY OF THE LIVER AND SMALL UPPER ABDOMINAL  LYMPH NODES ARE LIKELY THE SEQUELA OF CHRONIC UNDERLYING LIVER  DISEASE.	Affirmed
 119	PELVIS:     NO FINDINGS TO SUGGEST FDG AVID MALIGNANCY	PELVIS:     NO FINDINGS TO SUGGEST FDG AVID MALIGNANCY.	Affirmed
+120	vomiting	PRN for vomiting.	Negated
+120	vomiting	prn for vomiting.	Negated
+120	vomiting	P.R.N. for vomiting.	Negated
+120	vomiting	P.R.N for vomiting.	Negated
\ No newline at end of file
diff --git a/negex.python/negex_triggers.txt b/negex.python/negex_triggers.txt
index b9f3712..6f61870 100755
--- a/negex.python/negex_triggers.txt
+++ b/negex.python/negex_triggers.txt
@@ -63,6 +63,8 @@ not reveal		[PREN]
 not see		[PREN]
 not to be		[PREN]
 patient was not		[PREN]
+PRN for		[PREN]
+P.R.N. for		[PREN]
 rather than		[PREN]
 resolved		[PREN]
 test for		[PREN]
diff --git a/pyConTextNLP/tags/06252012/src/pyConTextNLP/itemData.py b/pyConTextNLP/tags/06252012/src/pyConTextNLP/itemData.py
index dec7853..6656d81 100755
--- a/pyConTextNLP/tags/06252012/src/pyConTextNLP/itemData.py
+++ b/pyConTextNLP/tags/06252012/src/pyConTextNLP/itemData.py
@@ -64,6 +64,8 @@ def extend(self,iterable):
 		super(itemData,self).extend(iterable)
 
 probableNegations = itemData([
+["PRN for","PROBABLE_NEGATED_EXISTENCE","","forward"],
+["P.R.N. for","PROBABLE_NEGATED_EXISTENCE","","forward"],
 ["can rule out","PROBABLE_NEGATED_EXISTENCE","","forward"],
 ["cannot be excluded","PROBABLE_NEGATED_EXISTENCE",r"""(cannot|can\snot)\sbe\sexcluded""","backward"],
 ["is not excluded","PROBABLE_NEGATED_EXISTENCE",r"""(is|was|are|were)\snot\sexcluded""",'backward'],
diff --git a/pyConTextNLP/tags/06252012/src/pyConTextNLP/pyConTextGraph/itemData.py b/pyConTextNLP/tags/06252012/src/pyConTextNLP/pyConTextGraph/itemData.py
index 1df3cfa..97bf679 100644
--- a/pyConTextNLP/tags/06252012/src/pyConTextNLP/pyConTextGraph/itemData.py
+++ b/pyConTextNLP/tags/06252012/src/pyConTextNLP/pyConTextGraph/itemData.py
@@ -107,6 +107,8 @@ def extend(self,iterable):
 
 
 probableNegations = itemData(
+["PRN for","PROBABLE_NEGATED_EXISTENCE","","forward"],
+["P.R.N. for","PROBABLE_NEGATED_EXISTENCE","","forward"],
 ["can rule out","PROBABLE_NEGATED_EXISTENCE","","forward"],
 ["cannot be excluded","PROBABLE_NEGATED_EXISTENCE",r"""cannot\sbe\s((entirely|completely)\s)?(excluded|ruled out)""","backward"],
 ["is not excluded","PROBABLE_NEGATED_EXISTENCE",r"""(is|was|are|were)\snot\sexcluded""",'backward'],