article_snippet.sent: Sophie Wilson performed CPR on Bradley Wilson .
article_snippet.sent: Sophie and Katie Alwill, 18, raised the alarm and summoned help after they stumbled across the teenager during a woodland walk . '
article_snippet.sent: Someone burned the rope free from the tree using a lighter,' said Miss Wilson. '
article_snippet.sent: Miss Wilson wasn't breathing and Miss Wilson pulse was very weak. '
article_snippet.sent: I learned CPR at school
article_snippet.sent: and I started doing chest compressions and mouth to mouth. '
article_snippet.sent: Miss Wilson started breathing again but it was more snorting than breathing. '
article_snippet.sent: It left the person with burns on their stomach.
highlights_snippet.sent: Sophie Wilson, 17, performed CPR on the teen after raising the alarm .
  