What are the keywords in the following sentence? the posters catch the eye with their modern colour palette and abstract patterns .
catch, eye, pattern

What are the keywords in the following sentence? i let biological variety go to seed because the flowers attract the bees .
attract, bee, flower

What are the keywords in the following sentence? An old middle eastern man is selling corn-on-the-cob from his brother's cart.
cart, cob, corn, sell

What are the keywords in the following sentence? trail to the top of the world
top, trail, world