Prolog indexing.

Hi.
As far as I know Swi-Prolog indexes predicates using the first
argument.

I have a Prolog database with many facts in form:

fact( atom, atom2 ).

Now I'd like to replace both 'atom' and 'atom2' with a list of 2 atoms.
Will this negatively affect indexing and performance? If so, is there
a way to prevent this?

--
Troman

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