CONCEPTS: patrol, provide, security, soldier, village

GEN: soldiers provide security while other soldiers patrol through a village .

CONCEPTS: bridge, rail, train

GEN: A long train comes down the rails as it crosses a bridge.

CONCEPTS: afternoon, eat, grass

GEN: rabbits eating grass on a sunny windy afternoon

CONCEPTS: live, organism, symbiosis

GEN:
symbiosis the living together of different organisms .