I have had this rather mind-boggling question: Do the following sentences require a singular or plural verb?
- The blue and the red dice are/is rolled on the floor.
- Geraldine's and Gerald's car are bought from California.
- The personality of the business and the owner are/is separate.
Semantically, the ideas the sentences are describing indicate plurality: (1) There are two di rolled onto the floor-one is red and the other is blue; (2) Geraldine has a car, and so does Gerald; (3) in Accounting, the personality of the business is different from that of the owner.