What are the keywords in the following sentence? teacher helping a young student with math
math, student, teacher

What are the keywords in the following sentence? A clock in middle of two building below blue sky.
building, clock, sky

What are the keywords in the following sentence? bronze statue the city is cultural site and major tourist attraction
attraction, city, statue

What are the keywords in the following sentence? smiling little boy petting and feeding a raccoon in a mini zoo .
feed, raccoon, zoo