Table 2 Number of Phrases Marked up by Annotators and ChemicalTagger

Add

46-49

47

ApparatusAction

18-23

21

Concentrate

10-11

11

Cool

23-28

24

Degass

19-29

22

Dissolve

29-34

30

Dry

36-40

39

Extract

11-12

10

Filter

21-26

20

Heat

15-26

17

Partition

2-7

3

Precipitate

15-20

13

Purify

25-32

26

Quench

16-16

16

Recover

0-9

9

Remove

18-21

30

Stir

33-37

34

Synthesize

50-66

46

Wait

2-8

14

Wash

25-26

25

Yield

35-39

36

Total

490-527

493