Wie, Wat, Waar?

Family game, slightly related to "Guess Who".
Several themes are represented and expressed in the 4 double-sided game cards.
You have to choose from a picture that your opponent then has to guess. Questions which can be answered only by yes or no.
If you guess the right image you win.
The four themes: transport, world-children, flags and animals.

Extra possibility is the use of two images, to guess on.