The table also compares two different versions of the rule-based classifier being the classifier as presented in §4.2 (left half of Table 3 ) and a classifier additionally incorporating the two heuristics (right half): • If the candidate NP follows according to, then it is labeled as an OH. • The candidate NP can only be an OH if it represents a person or a group of persons. These are commonly accepted heuristics which have already been used in previous work as features (Choi et al., 2005;<cite> Wiegand and Klakow, 2010)</cite> .