. _:b1217612 . "ENVO"^^ . _:b1217613 . _:b1217611 _:b1217610 . "ENVO:00002133"^^ . _:b1217610 . _:b1217611 . . _:b1217613 . _:b1217610 . _:b1217609 _:b1217612 . _:b1217613 . "anaerobic mud"^^ . _:b1217613 . _:b1217609 . _:b1217610 . "anoxic mud"^^ . _:b1217609 . _:b1217612 _:b1217611 .