What are the keywords in the following sentence? a pizza with olives, canadian bacon,pepperoni and anchovies on a plate
bacon, olive, pizza

What are the keywords in the following sentence? researcher working in a laboratory
laboratory, researcher, work

What are the keywords in the following sentence? A small pizza covered in tomatoes, fresh basil and shredded cheese.
basil, cheese, pizza, tomato

What are the keywords in the following sentence? He smiles, then shifts his gaze to someone, who stares at him with a confused expression.

gaze, shift, smile