What are the keywords in the following sentence? people wait for politician to speak at a campaign event on the tarmac of the airport .
airport, politician, wait

What are the keywords in the following sentence? motor boat passing wharf in the inner harbour
boat, harbour, pass

What are the keywords in the following sentence? some urinals and toilet stalls in a restroom
restroom, stall, urinal

What are the keywords in the following sentence? The people waited for the exit to open once the movie was over
movie, open, wait