What are the keywords in the following sentence? coaches against sports team in the second quarter .
coach, quarter, team

What are the keywords in the following sentence? soldiers load a missile onto a helicopter before a mission .
helicopter, load, mission, soldier

What are the keywords in the following sentence? A large green plain with many elephants grazing.
elephant, graze, plain

What are the keywords in the following sentence? the tree has stopped traffic from passing through
stop, traffic, tree