_:outerEl1 . _:outerEl1 "1"^^ . _:outerEl1 _:outerEl2 . _:outerEl2 _:innerEl1 . _:innerEl1 "2"^^ . _:innerEl1 . _:outerEl2 . _:outerEl3 . _:outerEl3 "1"^^ . _:outerEl3 _:outerEl4 . _:outerEl4 _:innerEl3 . _:innerEl3 "2"^^ . _:innerEl3 . _:outerEl4 .