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Treex-EN-2.20151102
River stage zero No dependents
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/ Treex::Block::W2A::EN::SetIsMemberFromDeprel
Treex::Block::W2A::EN::SetIsMemberFromDeprel

Nodes with conll_deprel attribute COORD under coordinating conjunction (tag=C) or coordinating comma (tag=P) are marked with the is_member attribute (i.e. as conjuncts).

CoNLL2007 English data marks several other constructions with COORD. We don't consider these coordinations and therefore we don't mark these with is_member. For example:

A rather then B
A along with B
A instead of B
A as much as B

If is_member is set before, it is preserved.