What are the keywords in the following sentence? A girl is rolling a snowball so she can make a snowman.
roll, snowball, snowman

What are the keywords in the following sentence? for a small apartment or family in nursing home
apartment, family, home

What are the keywords in the following sentence? lakes formed as part of a hydroelectric scheme .
form, part, scheme

What are the keywords in the following sentence? People comfort each other as the white ship glides away from the dock.
dock, glide, ship