What are the keywords in the following sentence? it follows the discovery of the biggest planet ever seen orbiting stars last month .
follow, orbit, planet

What are the keywords in the following sentence? amusement park attracts visitors a day and in its first year attracted visitors
attract, park, visitor

What are the keywords in the following sentence? this map shows where part would be located .
locate, map, part

What are the keywords in the following sentence? people waiting for the next ferry to dock at the ferry terminal on a grey foggy day
dock, ferry, wait