You misplaced a parenthesis. Remove this:
IF(AND(OR(G894=2,G894=2),OR(F894=2,F894=2),"Mete","Irrelevant"))
^
And put it here:
IF(AND(OR(G894=2,G894=2),OR(F894=2,F894=2)),"Mete","Irrelevant")
^
Otherwise, you have:
AND(OR(G894=2,G894=2),OR(F894=2,F894=2),"Mete","Irrelevant")
As the expression and no parameters for the IF's true (or false) evaluation.