Input question: On a wine label what does Premier Cru mean

Output answer: first growth

Input question: The Greek word petro/petros, as in petroleum and petrochemicals, etc, means?

Output answer: rock

Input question: Who composed the music for the opera Porgy and Bess, about 1920s African American life in Charleston, South Carolina?

Output answer: george gershwin

Input question: A sepulchre is a (what?), usually made/carved from stone?

Output answer:
tomb