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

What are the keywords in the following sentence? castle in front of it there is a big lawn with a flock
castle, front, lawn

What are the keywords in the following sentence? the greatest example of architecture is which was built
architecture, build, example

What are the keywords in the following sentence? the fans are in mourning as they pack into stadium after politician is killed .
fan, pack, politician