a strategy for the expression of the necessarily shared participant in the relative clause construction, in which the relative clause head denoting the shared participant is expressed only inside the relative clause. Example: in Imbabura Quechua [kan kwitsaman kwintuta villashka]-ka ali kwitsami 'The girl to whom you told the story is a good girl', the relative clause kan kwitsaman kwintuta villashka 'you told the story to the girl' contains the relative clause head kwitsaman '(to) the girl', and the girl is not expressed in the matrix clause ... ali kwitsami '... is a good girl'. The internally headed relative clause as a whole functions as an argument of the matrix clause predicate and may be recruited from the complement clause construction. The internally headed strategy is rare but fairly widely dispersed among the languages of the world. (Section 19.2.3)