What are the keywords in the following sentence? cat staring at the window
cat, stare, window

What are the keywords in the following sentence? this photo from astronomical observatory shows the farthest view into the universe ever captured .
capture, observatory, universe, view

What are the keywords in the following sentence? some people at a beach with rainbow colored umbrellas
beach, color, rainbow, umbrella

What are the keywords in the following sentence? crabs in an aquarium in the window of a restaurant
aquarium, restaurant, window