昨天Tony在操场上捡到了一个书包，里面有些个人物品，请写一个失物招领。英语作文，怎么写啊

I found a schoolbag on the playground of my school yesterday. In the bag there was a ping-pang bat. I thought its owner must like playing ping-pang. There was a computer game CD, then I guessed it must be a boy who liked playing computer games. And there was a French book. It meant that the boy was also studying French. Last, there was a CD of Jay Chou in the schoolbag, and then I thought he liked listening to pop music especially by Jay Chou very much.