51.   He has announced his retirement effective at the end of the season.

52.   He said officers had been disciplined and effective at maintaining the peace throughout the week while respecting the free speech rights of protesters.

53.   He thinks he is particularly effective at premarital counseling.

54.   His address gave Democrats in Congress a clear warning that Bush will be quite effective at using his office to appeal over their heads to the American people.

55.   His resignation is effective at the end of the month.

56.   However, Massachusetts officials said tougher national standards would be more effective at reducing Midwestern air pollution that travels on the wind to this region.

57.   I hereby submit my resignation as outside consultant and adviser to you and your Office of Independent Counsel, effective at noon today.

58.   In the past, retaliatory threats like the one made on Saturday have often proved effective at forcing concessions from China and Japan in a variety of disputes.

59.   In theory, that strategy should have been most effective at the AARP meeting.

60.   It can be particularly effective at leveling a power dynamic while making light of it.