11.   The pair reckon the JFK story will run and run until conclusive proof is provided about the person or persons behind his killing.

12.   Although significant research links video game violence to violence in kids, the Federal Trade Commission maintains that conclusive proof has never been established.

13.   Although American officials said they had no conclusive proof, current and former officials said they believed that the foreign minister was involved, directly or indirectly.

14.   Americans may have to accept that there is no conclusive proof that this was pilot error, suicide or mechanical error.

15.   Although the fact that the structure lies directly below the surface flow is suggestive, Jordan said, it is not conclusive proof that the two are related.

16.   A high-level intelligence official asserted in an interview last week that the conclusive proof lay in the fact that no such proof exists.

17.   A Palestinian security official said he had no conclusive proof of that claim.

18.   But conclusive proof of this phenomenon has not been established.

19.   But in testifying before a Police Commission misconduct hearing, Stephens stopped short of saying the similarities were conclusive proof that Andaya had kicked Williams in the face.

20.   But on Thursday, the U.N. Military Force here produced what appeared to be the most conclusive proof ever of such an incident.