premise: a snowboarder wearing a green hat is riding along a metal railing. hypothesis: A snowboarder is riding along a metal railing while wearing a green hat.
entailment: While wearing a green hat is a rephrasing of wearing a green hat.|entailment: 'A snowboarder is riding along a metal railing while wearing a green hat' is a rephrasing of 'a snowboarded wearing a green hat is riding along a metal railing'.|entailment: "A snowboarder is riding along a metal railing while wearing a green hat" is rephrased from "A snowboarder wearing a green hat is riding along a metal railing".