If you know for certain which values for F6 trigger having G14 equal
B14, and there aren't too many of them (you said there are five), try
putting something like this in G14:

=IF(OR(F6=nXXXXX,F6=nXXXXX,F6=nXXXXX,F6=nXXXXX),B14,"")

replacing XXXXX with your actual values, of course. Extend the series
of OR tests by adding more "F6=nXXXXX" bits separated by commas.

This makes the value of G14 blank unless one of your conditions is met.