ID	Rule	Condition on anaphor	Condition on antecedent	Motivation
1	Building part	Common NPs whose head is a building part without nominal pre-modifications	NP with the strongest semantic connectivity to the anaphor	Building part is often involved in meronymy
2	Relative person	Non-generic NPs whose head is a relative without nominal/adjunctive pre-modifications	Closest non-relative person NP	Handles relative nouns, which tend to be bridging
3	GPE job title	Job titles with country pre-modifications (e.g., Italian mayor)	Most salient GPE (e.g., Italy)	Some job title NPs implicitly refer to the globally salient GPE
4	Professional role	Professional role NPs (e.g., pro-fessor)	Most salient organization name	A more general rule than “Relative person” and “GPE job title”
5	Set: Percent-age	Percentage NPs in subject position	Closest NP modifying another percentage NP via “of” (e.g., 22% of the firms)	Percentage expressions can indicate set bridging
6	Set: Number or indefinite pronoun	Number expressions (e.g., two dogs) or indefinite pronouns (e.g., some ...)	Closest plural NP in subject position. If not found, closest plu-ral NP in object position	Numbers or indefinite pronouns can indicate set bridging
7	Argument-taking NPs 1	NPs with high argument ratio and without nominal/adjective pre-modifications or indefinite determiners	1. take all nominal modifiers of NPs whose head is same as anaphor's head. 2. closest NP that is a realization of these modification	Different instances of the same noun predicate likely maintain the same argument fillers indicated by nominal modifiers
8	Argument-taking NPs 2	NPs in subject position with high argument ratio and without nominal/adjective pre-modifications	NP with the strongest semantic connectivity to the anaphor	A NP in subject position that is likely to take arguments tends to be bridging anaphor
9	Meronymy relation	Unmodified definite NPs	NP classified as meronym with the anaphor by a relation classi-fier trained using WordNet	Handles meronym bridging
10	Comparative anaphora	NPs with comparative markers	Closest NP with same head and semantic category	Comparative anaphors are typi-cally indicated by certain mark-ers
11	Subset or element-of relation	NPs modified by noun, adec-tive, or relative clause	Closest NP with same head and semantic category	Anaphor is typically more spe-cific than antecedent in subset or element-of bridging
12	Time subset	Expressions whose semantic cat-egory is TIME (e.g., 1920s)	Closest NP with TIME cate-gory and same decade number	Handles time expressions
13	One anaphora	Common noun starting with "one" (e.g., one committee member)	Closest plural NP with same se-mantic category and same com-mon noun part	Handles one-anaphors
14	Locations	NPs with semantic category GPE or ORG	Closest NP with same category and has WordNet PartHolonym relation with anaphor	Handles links between cities/areas and their state/country
15	Same head	Singular and short NPs	Closest plural NP with same head and semantic category	Complements the “subset or element-of” rule
16	The rest	NPs whose string is “the rest”	Closest number expression	“the rest” is often annotated as bridging
17	Person	Person expressions with appo-sitions (e.g., David Baker, vice president)	Closest plural person NP whose head is the same as head of anaphor's apposition	Handles person expressions with appositions
18	Other	NPs that cannot be handled by any of the rules