What are the keywords in the following sentence? metro moving escalator with no people
escalator, metro, move

What are the keywords in the following sentence? silhouette of the unidentified fisherman throwing net in sea on sunset
fisherman, sea, silhouette, sunset

What are the keywords in the following sentence? businessman sits in the office at her desk .
businessman, desk, office, sit

What are the keywords in the following sentence? police and stewards hold people back as person and fans attempt to confront each other inside soccer pitch
attempt, fan, hold, steward