What are the keywords in the following sentence? engineers began building a great city off the coast .
begin, city, coast

What are the keywords in the following sentence? astronaut has just broken the record for the longest time spent in space by country
astronaut, record, space, spend, time

What are the keywords in the following sentence? teacher checking notes in a classroom
check, classroom, teacher

What are the keywords in the following sentence? A bathroom sink under a mirror on top of a counter.
bathroom, counter, mirror, top