Merge pull request nltk#1821 from nltk/nschneid-patch-1

framenet.py: citation; fix typo in method documentation

nltk/corpus/reader/framenet.py

@@ -1003,6 +1003,10 @@ def help(self, attrname=None):
 
 
         msg = """
+Citation: Nathan Schneider and Chuck Wooters (2017), 
+"The NLTK FrameNet API: Designing for Discoverability with a Rich Linguistic Resource". 
+Proceedings of EMNLP: System Demonstrations. https://arxiv.org/abs/1703.07438
+
 Use the following methods to access data in FrameNet.
 Provide a method name to `help()` for more information.
 
@@ -1023,7 +1027,7 @@ def help(self, attrname=None):
 LEXICAL UNITS
 =============
 
-lu() to look up a frame by its ID
+lu() to look up an LU by its ID
 lus() to get lexical units matching a name pattern, optionally constrained by frame
 lu_ids_and_names() to get a mapping from LU IDs to names