What are the keywords in the following sentence? the fire broke out inside an apartment in the section
apartment, break, fire

What are the keywords in the following sentence? wooden yachts with high masts moored at the marina
marina, mast, yacht

What are the keywords in the following sentence? a soldier belonging raises the flag during a ceremony
ceremony, flag, raise, soldier

What are the keywords in the following sentence? trees blowing in a storm
blow, storm, tree