CONCEPTS: butt, dog, sniff

GEN: One dog is getting it's butt sniffed from another.

CONCEPTS: bed, cover, curtain

GEN: A red curtain covers a window behind a bed.

CONCEPTS: building, eat, zebra

GEN: The zebra eats the grass near a building.

CONCEPTS: elevator, run, steward

GEN:
The elevator opens and someone and someone spill out, almost running into a steward.