Question: 4. Use the append predicate to define a predicate just_before(x, y, z) that holds when x appears just before y as an element of list

4. Use the append predicate to define a predicate just_before(x, y, z) that holds when x appears just before y as an element of list z. So, for example,

?- just_before(3,4,[1,2,3,4,5,6]).

Yes

?- just_before(3,5,[1,2,3,4,5,6]).

No Hint: This can be done with one clause. Look at how elem2 is defined.

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