What are the keywords in the following sentence? A clock tower overlooks the city and tells the time
tell, time, tower

What are the keywords in the following sentence? tiny doctor examining a heart with a stethoscope
doctor, heart, stethoscope

What are the keywords in the following sentence? construction is almost finished at the building .
building, construction, finish

What are the keywords in the following sentence? places and architecture around the world
architecture, place, world