1.   For some, book collecting complements another collection.

2.   She trusted him to offer her work that would complement the collection, which he saw on a visit to Baltimore.

3.   Two other buildings nearby, both built by the de Menils, complement the collection although they are run separately.

4.   Video-store owners stocked up on John Wayne westerns and kung-fu epics to complement their collection of X-rated movies.

5.   While it encourages traditional museums to offer Internet sites to complement their collections, it says that on-line museums are not museums.