What are the keywords in the following sentence? a large tree came crashing down onto a car and home .
come, crash, tree

What are the keywords in the following sentence? the small entrance in the botanical garden the walls has vines and grasses all over it
entrance, garden, wall

What are the keywords in the following sentence? tracking shot of trees outside a moving train .
move, train, tree

What are the keywords in the following sentence? bees fighting for a flower
bee, fight, flower