What are the keywords in the following sentence? time lapse of alone tree near the beach with the moving clouds
beach, move, tree

What are the keywords in the following sentence? cricket player keeps wicket during a nets session .
keep, player, session

What are the keywords in the following sentence? soccer player comes out to meet the fans at half time during the match .
come, fan, player, time

What are the keywords in the following sentence? an orthodox man walks past soldiers guarding the tomb of the prophet in the town
guard, soldier, tomb