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Simple?? Prolog question

Simple?? Prolog question

(OP)
Er, hello?  hehe :)

If there is anyone out there, then could they please please help a Prolog newbie?

All I have to do is take a list of numbers (E.g. [1,2,3,4,5]) and given the query thirdhighest([1,2,3,4,5],X). should return X=3.

This, I am sure, is dead easy.  However, I have spent far too long in the imperical procedural world of Java and VB and just can't even get a simple predicate like highest going.

Cheers

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