csubj:outer
: outer clause clausal subject
This relation specifies a clausal subject of a copular clause whose predicate is itself a clause, to signal that it is not the subject of the nested clause. See discussion of Predicate Clauses.
The nominal counterpart of this relation is nsubj:outer.
The :outer
subtype is not intended for most clausal subjects of copular clauses—only those where the predicate is itself a clause.
Plain csubj (or another subtype) will be appropriate if the copular clause predicate is a nominal, adjective, etc.:
csubj:outer in other languages: [en] [gd] [ru] [sv] [u]