81.   It was central to the plan.

82.   Central to the operation are tankers flown by The United States part-time airforce.

83.   But winning the case was never central to us.

84.   Low-density lipoprotein is central to the problem of fat layers which eventually block the arteries.

85.   As we shall see, this is an area which has been central to the most fundamental controversies in macroeconomics.

86.   Communication is central to PR.

87.   Respect for others and concern for those in need are central to the ethos of the School.

88.   Also central to the pro- Union sentiments was the economic unimportance of slavery to most east Tennesseans.

89.   Also central to the drivetrain in the four-wheel-drive model is a Torque on Demand system that distributes torque front and rear as needed.