Problem: What are the most important words?
Children in intercity league learn more than just rules of game.
Answer: game, learn, rule

Problem: What are the most important words?
fossils preserved remains or traces of an organism that lived in the past .
Answer: fossil, live, past, preserve, trace

Problem: What are the most important words?
Orange train on tracks traveling through hilly woods.
Answer:
track, train, travel, wood