What are the keywords in the following sentence? astronaut performs a spacewalk aboard satellite .
astronaut, perform, spacewalk

What are the keywords in the following sentence? footballer and team mates before the match .
footballer, match, team

What are the keywords in the following sentence? tv producer speaks with film director at premiere after party .
director, party, premiere, producer

What are the keywords in the following sentence? a protester calls out early friday morning to those gathered in protest of politician .
gather, politician, protest, protester