In practice, however, some candidate antecedents are implausible given the context.
to identify such candidate antecedents, we employ a simple heuristic, which considers a candidate antecedent implausible if its event subtype is different from that of e. we model P (c|k) as follows: if c is implausible, we set P (c|k) to 0 and distribute the probability mass uniformly over all and only the plausible candidate antecedents.