What are the keywords in the following sentence? flock of sheeps eating hay on a farm
farm, flock, sheep

What are the keywords in the following sentence? the limited edition poster created especially for the event .
create, event, poster

What are the keywords in the following sentence? Two men lead an elephant through a village in a parade.
elephant, lead, parade

What are the keywords in the following sentence? a formation of helicopters fly over an aircraft
fly, formation, helicopter