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Table 9 Most common clue expressions for Polarity = Negative

From: Enriching a biomedical event corpus with meta-knowledge annotation

Category Freq
not 1141
no 199
independent 113
without 65
failed 47
nor 47
absence 42
neither 38
unaffected 28
lack 23
un 23
unable 19
independently 18
resistant 15
fails 13