is there a way to know how long does it take to prolog's inference engine to get a respones for a query?

Question

I am trying to find out which way of finding an answer to a query in prolog is faster.

For instance, if

employee('John',23). rule2('John', 'Likes to play basketball').

if faster than:

employee('John', '23').
rule2(employee('John,_),'Likes to play basketball').