What are the keywords in the following sentence? a spiral staircase leads up to the mezzanine where the bedroom is located .
bedroom, lead, staircase

What are the keywords in the following sentence? players leave the pitch after their match is abandoned
leave, match, pitch, player

What are the keywords in the following sentence? boats at low tide on the coast
boat, coast, tide

What are the keywords in the following sentence? A person taking a slice of pizza from a pie
pie, pizza, slice, take