What are the keywords in the following sentence? car of president of politician arriving .
car, politician, president

What are the keywords in the following sentence? A large tower towering over a city with a massive clock.
city, clock, tower

What are the keywords in the following sentence? talking already spent some time relaxing on a boat
boat, spend, time

What are the keywords in the following sentence? find the sides of the triangle .
find, side, triangle