However, I think most people accept that provided we can get a proper political process relaunched in the Middle East, and that is the vital pre-requisite of peace there.

BBC: News | BREAKFAST WITH FROST | Interview with Prime Minister Tony Blair

The court system say: a pre-requisite of our having a complex society at all.

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So while only 10% of the time is spent on the formal lessons, they are a pre-requisite for correct practice at the driving range.

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