What are the keywords in the following sentence? a big train that is parked on a track
park, track, train

What are the keywords in the following sentence? constitutional republic have also been fined and will play their next qualifier away from their national stadium
qualifier, republic, stadium

What are the keywords in the following sentence? An old wooden table has utensils, pots, and pans on it.
pan, table, utensil

What are the keywords in the following sentence? clouds disappearing in the sky
cloud, disappear, sky