"urea enriched soil"^^ . _:b1217928 . _:b1217926 . _:b1217929 . _:b1217926 . _:b1217927 _:b1217926 . _:b1217929 . _:b1217929 . _:b1217928 _:b1217927 . _:b1217925 . _:b1217925 _:b1217928 . _:b1217927 . "ENVO:00005753"^^ . . _:b1217925 . _:b1217926 . _:b1217929 . . "ENVO"^^ .