Detailed Instructions: In this task you are given a short story and a question regarding that story. You must answer the question based on the events of the story. Try to use the same words in the story to answer each question. You should completely answer the question in a short answer. Do not include information that is unnecessary to answer the question.
Q: Sandy and Bob set out to break a world record. They tried to break several different current records. They needed photographic evidence of the record being broken. Bob forgot to bring his camera. Sandy was mad that they did all that work for nothing.
Why was Sandy mad that they did all that work for nothing?
A:
They needed photographic evidence of the record being broken.