11.   The pump overheated, and initial tests revealed no immediate explanation for the failure, he said.

12.   The two banks gave no immediate explanation for breaking off talks.

13.   There was no immediate explanation of why the pilot had failed to land earlier.

14.   There is also a profusion of string-straight lines, some extending for miles, none suggesting an immediate explanation of why they were drawn.

15.   There was no immediate explanation for the disparity between the prices paid for the two stakes.

16.   There was no immediate explanation for the disruption, but NATO forces hit a number of television transmitters overnight.

17.   There was no immediate official explanation, but he and other Hamas officials have been vocal in their criticism of the Camp David talks.

18.   There was no immediate explanation for the decline.

19.   There was no immediate explanation for the disparity.