What are the keywords in the following sentence? soldiers patrol in vehicles along the southern border .
border, patrol, vehicle

What are the keywords in the following sentence? players warm up prior to bronze medal match during day .
day, match, player, warm

What are the keywords in the following sentence? city and beach on rugged central coast .
beach, city, coast

What are the keywords in the following sentence? Some clocks are mounted to the top of a pole.
clock, mount, pole, top