Table 3:

Data split for automatic classification: The table is in order of completion of annotation batches.

Annotation batch	Total Articles	Training Articles	Testing Articles
Prior work: E.K.W., M.R.B.*, (E.D.**)	52	37	15
Training: Gold-standard, K.J.S., S.A.	8	6	2
K.J.S., S.A., (M.R.B***)	8	6	2
K.J.S., M.R.B.***	11	8	3
S.A., M.R.B.***	12	8	4
Total Articles	91	65	26
Total Sentences	12,055	8,281	3,774
Total Words	416,866	285,439	131,427

Note that E.K.W. is Elizabeth K. White, M.R.B. is Mayla R. Boguslav, E.D. is Emily Dunn, Gold-standard is the previous gold-standard up to that point (the first row), K.J.S. is Katherine J. Sullivan, and S.A. is Stephanie Araki.

^*M.R.B. is an annotator along with the others.

^**E.D. only annotated one article along with the other annotators and then stopped.

^***M.R.B. was the adjudicator in these batches.