51.   The exception was the Japanese yen, which gained slightly on the dollar, but traders said there was no clear explanation for that.

52.   The hijackers never gave a clear explanation of their aims, he said.

53.   There is no clear explanation for the annual surge of violence.

54.   There is no clear explanation of the discrepancy.

55.   There has been no clear explanation why the move was taken now, when the economy has begun to show signs of recovery.

56.   There was no clear explanation how the sliver found its way into the home.

57.   Today, his clear explanations have made physics accessible to those with little or no scientific background.

58.   Throughout tense negotiations with Essex police, the hijackers never gave a clear explanation of their aims, said David Stevens, chief constable of Essex County police.

59.   Tong said there is no clear explanation for either the regional or the racial differences.

60.   Zarate said there was no clear explanation, but he said researchers were conducting studies to determine whether diet played a part.