Question: 2. Consider the mystery predicates p and q defined by the following three clauses: p(X) :- q(X,[],X). q([],Y,Y). q([E|L],Y,Z) :- q(L,[E|Y],Z). Describe in English the

2. Consider the mystery predicates p and q defined by the following three clauses:

p(X) :- q(X,[],X).

q([],Y,Y).

q([E|L],Y,Z) :- q(L,[E|Y],Z).

Describe in English the lists x for which the predicate p(x) holds.

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