What are the keywords in the following sentence? structure and church in the centre of town
centre, church, structure

What are the keywords in the following sentence? There are some girls getting ready with the curling sticks and prepping the rink to play curling.
curl, rink, stick

What are the keywords in the following sentence? packed fast food for sale at supermarket .
food, pack, supermarket

What are the keywords in the following sentence? A jet waits on the runway of a mountain airport
airport, jet, wait