What are the keywords in the following sentence? the flowers fully opened about a hour later when the sun grew stronger .
flower, grow, sun

What are the keywords in the following sentence? train which has stopped on tracks
stop, track, train

What are the keywords in the following sentence? author and racing is given a lift back to pits by racecar driver
author, driver, give, pit

What are the keywords in the following sentence? a boat passes a pier and lobster village
boat, pier, village