What are the keywords in the following sentence? once upon a time an angel and a devil fell in love
angel, devil, fall, love, time

What are the keywords in the following sentence? Some grilled cheese are on a white plate with a bowl of chili nearby.
bowl, cheese, grill

What are the keywords in the following sentence? award winner was awarded gold in the category at awards
award, category, winner

What are the keywords in the following sentence? A cat standing on tile next to another cat.
cat, stand, tile