sentence: Green trails are easiest, blue trails are more difficult, and black trails are rated most difficult.
sentences_before: Each trail is marked with a sign that shows how difficult that particular run will be. Three different colors are used to rate the difficulty of the trail.
sentences_after: The colors which represent a trail will also be seen in a shape.
concept_name: green trail
headings: Skiing Downhill skiing
categories: Winter Olympic sports