Concepts: cover, olive, pepperoni, pizza
A: a pizza is covered with pepperoni and olives.
Concepts: cheese, olive, pizza, top
A: This square pizza has cheese, bell peppers, mushrooms, olives and sauce on top.
Concepts: ecology, environment, organism, study
A: ecology is the study of interactions that occur among organisms and their environments .
Concepts: flock, grassland, sheep
A:
flock of sheep on the grassland