Since they are siblings, it would mean that the father was the brother of the mother, and the mother was the sister of the father.
I think you got it Joker, but I'm so confused, who the hell knows. haha Here's what I have.
There was a brother and sister. The brother's son was there and so was the sister's daughter. From this, it follows that the son and daughter were cousins, and all the other relationships are quite straightforward.
Deadline: Monday, August 25.
Clues: 1
Two trucks have to carry the same heavy loads across a desert. One is an older truck with an older driver, Joe, who knows his way to the village that is their destination. The other truck is more modern, but its driver, Jim, does not know the way. They agree that the modern truck will follow the older one. Unfortunately, Jim has forgotten to fill up with fuel. By the time he does this, the first truck is well out of sight; however, it has left very clear tracks in the sand, and Jim follows them.
After some time, the tracks start to become less and less clear. Eventually, they disappear altogether. This surprises Jim, because there is no wind to cover the tracks and his own tracks are still very clear. There is no sign of the other truck, but in due course a bedouin on a camel arrives, and, with his help, Jim gets to the village. There, he meets Joe and discovers the reason why the tracks disappeared. What was it?