What are the keywords in the following sentence? thunderstorms hit a city on saturday .
city, hit, thunderstorm

What are the keywords in the following sentence? has become one of most popular players since joining the club on loan in january
club, join, loan, player

What are the keywords in the following sentence? train tracks edged by trees leading off into the distance
lead, track, tree

What are the keywords in the following sentence? tourist attraction designed by architects and opened
architect, attraction, design, open