Prediction

While exploring to see what there was in the center of the earth, they found amazing sights such as a forest of petrified mushrooms as tall as skyscrapers.  They wanted to see what was on the other side of the sea.  They decided to build a raft.  They gathered wood and tied it together with the unusually tall grass.  

My prediction is that they would sink and become the first people ever to drown in the center of the earth.   Of course the book had several pages left so I wasn't sure how accurate this prediction was.