What are the keywords in the following sentence? politician addresses a crowd during his visit to a mausoleum of philosopher on the occasion .
address, crowd, politician, visit

What are the keywords in the following sentence? beautiful white tiger lying on a flat rock in the jungle
lie, rock, tiger

What are the keywords in the following sentence? low clouds roll in through the mountains
cloud, mountain, roll

What are the keywords in the following sentence? an advertisement adorns the since demolished building outside structure .
building, demolish, structure