What are the keywords in the following sentence? students smiling in a campus
campus, smile, student

What are the keywords in the following sentence? high school students doing their homework in the library
homework, library, student

What are the keywords in the following sentence? Two guys are wrestling on a mat, with one in a blue uniform, and the other in maroon.
mat, uniform, wrestle

What are the keywords in the following sentence? olympic athlete breaks into a smile as he sprints to his fourth gold medal
athlete, medal, sprint