Raft Puzzle

Here's one to rob you of your valuable time or take your mind off last night's game if applicable, from the master puzzler Paul of BackSeatDrivers.

The rules are:

Everybody has to cross the river. Only 2 persons on the raft at a time. The father cannot stay with any of the daughters without their mother's presence, The mother cannot stay with any of the sons without their father's presence, The thief (striped shirt) can not stay alone with any family member, Only the Father, the Mother and the Policeman know how to operate the raft.
Open it here, then click on the blue circle.

Paul says this is used by Japanese companies as a job interview IQ test. If so, I wouldn't have got the job.

Update: Just looked at the writing. It's Chinese, not Japanese.