Problem: What are the most important words?
vacation on board of the same yacht than celebrities .
Answer: board, vacation, yacht

Problem: What are the most important words?
person looks dejected as the players go off in celebration after penalty
Answer: deject, look, penalty, player

Problem: What are the most important words?
a graduate acknowledges his family and friends as he enters the stadium .
Answer:
acknowledge, family, friend, graduate, stadium