Task: Question Answering
Input (English): Passage: One of my friends was having a birthday and their mother decided to throw them a surprise party . I had never been to a surprise party and was looking forward to it . We all decided to park down the street and walk to the house , so our friend would n't see our cars . When we got to the house , it looked like it always did , but when we went inside there were balloons and decorations everywhere . We hurried to put all the present on the table and found places to hide . Her mother said that she would be home any minute . So we turned out the lights and waited . She was really surprised . You could tell she had no idea we were planning a party for her . All of her friends and family were happy to be able to throw her such a special birthday party . Question: When did everyone yell, "surprise"? Option1: before birthday party Option2: When the friend arrived home.
Output (English): When the friend arrived home.