Minor modifications

README.md

@@ -165,6 +165,13 @@ up in the datasets.
 The training sets were not annotated manually. This is indicated by
 the value 0.0 in the `annot_score` field.
 
+For an assessment of of inter-annotator agreement, see Mikko Aulamo,
+Mathias Creutz and Eetu Sjöblom (2019). [Annotation of subtitle
+paraphrases using a new web
+tool.](http://ceur-ws.org/Vol-2364/3_paper.pdf) In Proceedings of the
+Digital Humanities in the Nordic Countries 4th Conference],
+Copenhagen, Denmark.
+
 ### Data Splits
 
 The data is split into ...