Task: Question Answering
Input (English): Context: It is like night and day . The parents , teachers , and kids there seem so nice . Already Arthur 's teacher has gotten to know so much about him . On the first day she told me that she noticed , " he was a little nervous at first , but after a while he relaxed and got more comfortable . " She also said he " is a quick learner , he likes math , and he 's quite an artist . ". 
Question: Why was Arthur nervous at first ?
Output (English): Because he was new at school .