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Table 2 Examples of disambiguation and location boundary adjustment rules.

From: Event extraction of bacteria biotopes: a knowledge-intensive NLP-based approach

  Rule role Rule example Location term
Ex. 1 Type disambiguation IF dead, decaying in term THEN type =Env dead animal (Host) becomes dead animal (Env)
Ex. 2 Boundary extension IF nationality before term (Env) THEN include nationality oil field (Env) becomes German oil field (Env)
Ex. 3 Boundary reduction IF irrelevant modifier in term THEN delete modifier infected rodent (Host) becomes rodent (Host)