41.   The conclusion is based on five different sets of observations, from separate groups of astronomers.

42.   The Court of Appeals based its conclusion on a prison regulation that instructs the committee to find guilt when a charge of misconduct is supported by substantial evidence.

43.   The Dana-Farber researchers in Boston based their conclusion on a reanalysis of earlier randomized clinical trials that scientists had thought argued against lung cancer screening.

44.   The commission based its conclusions on testimony from hundreds of teachers, students and private-sector executives during the past year.

45.   The enforcement agencies based their conclusions primarily upon a six-month review of the evidence compiled by LAUSD Inspector General Don Mullinax.

46.   The more recent conclusions were based on a study of infant rhesus monkeys at the Yerkes Regional Primate Research Center at Emory.

47.   The official said he based his conclusions on conversations he had with detectives who interviewed Stevens and his mother.

48.   The report, to be issued by the Office of Research of the Democrat-controlled Senate based its conclusions on a review of previous research and data.

49.   The scientists, who based their conclusion on studies of fossils, reported their findings in the current issue of the journal Nature.

50.   The spy agency based its conclusion on an elaborate surveillance of the contacts between drug gangs and their business associates.