What are the keywords in the following sentence? homes were damaged by an explosion sunday morning in the block .
block, damage, home

What are the keywords in the following sentence? citizens using bicycles a common mode of transportation to navigate city
bicycle, citizen, city, transportation

What are the keywords in the following sentence? football player arrives for the match
arrive, match, player

What are the keywords in the following sentence? football coach reacts to a non call during the first quarter against american football team .
call, coach, quarter