5.8 Spurious links between Noun Phrases sharing the same head (1.3%: 0% / 4% / 0%) In the same text, different entities can share their heads in some mentions, which may involve errors in coreference links, depending on their position and on their features.
the NP "the president" may be linked to two different persons like "the president of the Academia" and "the president of the Government".