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

What are the keywords in the following sentence? a demonstrator shouts slogans against politician as protesters block a road .
block, demonstrator, road, slogan

What are the keywords in the following sentence? a close up of a fast flowing mountain stream in winter
flow, stream, winter

What are the keywords in the following sentence? event depicted in testament a sculpture on the grounds
depict, event, sculpture