Corot [PP dont] [DP le portrait [PP2 dont] [PP de cette jeune femme]] se trouve à la Fondation Barnes …
Corot _ of.which _ the portrait _ of.which _ of this young woman REFL finds at the Foundation Barnes …
Corot, by whom the portrait __ of this young woman is located in the Barnes Foundation …’ (examples from : 268–269, following ; also cf. ).