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Table 2 Nested CEM pairs in the development set of the CHEMDNER corpus.

From: A CRF-based system for recognizing chemical entity mentions (CEMs) in biomedical literature

    Offset Offset
ID PMID T/A Start End Start End
1 23412114 A 977 984 977 985
2 23572392 T 42 55 42 56
3 23414800 T 69 89 68 89
4 23411224 A 278 288 277 288
5 23401298 A 438 502 438 501
  1. The offsets in column 4-5 are corrected to the ones in column 6-7.