41.   A problem has been having enough of these chairs and people trained to use them available in high-rises, experts said.

42.   A related problem has to do with neutrinos produced by the fusion process in the sun.

43.   A related but different problem has to do with neutrinos produced by the fusion process in the sun.

44.   Borel also said weight problems have an effect.

45.   Browne thinks most health and relationship problems have their roots in our unresolved past lives.

46.   But Coca-Cola is not, and its problems have nothing to do with the Olympics.

47.   But concerned food writers and others say the problem can have serious consequences.

48.   But in this lotus land, even that problem may have its sunny side.

49.   But it is good to remember that complex problems rarely have simple answers.

50.   But Levine and other analysts agree that some fundamental problems have to be addressed in any new contract with the Machinists.