What are the keywords in the following sentence? A young girl borrowed her friends hula hoop.
friend, hoop, hula

What are the keywords in the following sentence? A train is pulling many men on the top.
pull, top, train

What are the keywords in the following sentence? a subway style sandwich made with onions, tomatoes, lettuce, peppers and meat
meat, onion, pepper, sandwich

What are the keywords in the following sentence? Firefighter responding to a call.
call, firefighter, respond