premise: Indian captain Rahul Dravid, recovered from a finger injury, took a painful blow in the ribs from Pollock. He had yet to score at lunch, while Sachin Tendulkar was on four.
  The morning's play was restricted to an hour. The start was delayed by 90 minutes because of damp patches on the pitch.
  The Gauteng Cricket Board said the damp patches were caused by wet hessian placed on the pitch overnight because groundsman Chris Scott was concerned that the surface was too dry and that it might break up on the fourth and fifth days.
   What caused damp patches on the pitch?
hypothesis: surface was too dry and that it might break up