What are the keywords in the following sentence? customers looking at televisions for sale in a supermarket
customer, look, television

What are the keywords in the following sentence? friend comforting to a sad student with failed exam
comfort, exam, fail, friend, student

What are the keywords in the following sentence? vegas ridden by olympic athlete in the first round
athlete, ride, round

What are the keywords in the following sentence? the trail crossed creeks along the way .
cross, trail, way