What are the keywords in the following sentence? aircraft coming to land at airport over building and new change
aircraft, come, land

What are the keywords in the following sentence? close up shot of a r being used to repair a damaged road
close, repair, road

What are the keywords in the following sentence? a nurse discusses paperwork with a patient .
discuss, nurse, patient

What are the keywords in the following sentence? a pair of matched draft horses in full harness
horse, match, pair