What are the keywords in the following sentence? With a woeful expression, he opens his eyes and shifts them thoughtfully.
eye, open, shift

What are the keywords in the following sentence? A red cable car is on the tracks by a green and brown mountain.
car, mountain, track

What are the keywords in the following sentence? country and continent in the preparation to built a village on the moon
build, continent, country

What are the keywords in the following sentence? Two hotdogs in soggy buns with chili, onion and mustard.
bun, hotdog, onion