Task: Story Composition
Input (English): Premise: Jack decided to take his dog for a walk. 
 Initial Context: He changed his mind when he saw it was raining hard outside. 
 Original Ending: His dog had already got excited and made him put on his shoes anyway. Jack went out grudgingly, but was soon romping through puddles. Dog and master returned home quite wet and muddy, but very happy. 
 New ending: His dog had already got excited and made him put on his shoes anyway. Jack went out grudgingly, but was soon romping through snow. Dog and master returned home quite wet and snowy, but very happy. 
Output (English): He changed his mind when he saw it was snowing outside.