Given the task definition and input, reply with output. You are given a sentence and a question. You're expected to write the correct answer based on the sentence.

Sentence: Roy is trying to figure out which type of hockey field will allow him to make the longest hockey slapshot with his hockey puck. The roller hockey field is rough and made of asphalt while the ice hockey field is smooth and made of ice. Question: Which field will let him make a longer slapshot?
ice hockey