What are the keywords in the following sentence? pedestrians walk down a city during film festival last week .
city, festival, pedestrian, walk

What are the keywords in the following sentence? football player is mobbed by fans on the pitch following the final whistle during the international friendly match .
follow, match, pitch, player

What are the keywords in the following sentence? the wave breaks about stones lying near to coast
break, coast, stone, wave

What are the keywords in the following sentence? family revealed she is alive and well in hospital thanks to the firefighter who saved her life .
family, firefighter, life