What are the keywords in the following sentence? customers are seen buying groceries from a mini market .
customer, grocery, market

What are the keywords in the following sentence? A baby elephant is nursing from the mother in a zoo.
elephant, mother, nurse

What are the keywords in the following sentence? giant balloons float down neighborhood .
balloon, float, neighborhood

What are the keywords in the following sentence? Two zebras facing opposite directions in a grassy field.
face, field, zebra