W:There are many things in the lost and found box. Look at the watch.
M:No, it isn't.
W:What about the English book?
M:It's Jenny's.
W:Is the basketball Peter's?
M:Yes, it is.
W:Whose tapes are these?
M:They're Lingling's.
W:Please tell them to put their things away.
M:OK. Thanks.