CONCEPTS: butterfly, cocoon, emerge

GEN: students are shown just after a monarch butterfly had emerged from its cocoon .

CONCEPTS: athlete, medal, sprint

GEN: olympic athlete breaks into a smile as he sprints to his fourth gold medal

CONCEPTS: hang, mirror, wall

GEN: A towel rack hangs on the wall between two mirrors.

CONCEPTS: gather, tree, zebra

GEN:
A few zebras are gathered by some trees.