What are the keywords in the following sentence? man celebrates his bronze medal following event during day .
celebrate, day, medal

What are the keywords in the following sentence? Clock at a train station showing the time of the next trains arrival.
arrival, clock, station, time

What are the keywords in the following sentence? church has stood as a place of worship in the heart .
heart, place, worship

What are the keywords in the following sentence? Several bikes parked next to a white van.
bike, park, van