What are the keywords in the following sentence? religion hold a ceremony to sanctify themselves on the day of holiday
ceremony, hold, holiday

What are the keywords in the following sentence? Three microwaves two stacked one separate beginning to catch fire
catch, fire, microwave

What are the keywords in the following sentence? mountain biker at sunrise next to giant sculpture overlooking the sea
overlook, sea, sunrise

What are the keywords in the following sentence? large hall in a castle with gothic vaulted ceiling
castle, ceiling, vault