_:subj . _:formula2 _:t1102879364statement1 . _:t1102879364statement1 _:subjf2 . _:t1102879364statement1 . _:t1102879364statement1 . _:formula3 _:t1102879364statement2 . _:t1102879364statement2 _:subjf3 . _:t1102879364statement2 . _:t1102879364statement2 . _:formula2 _:formula3 .