. _:vb50934974 ":arcc045b417" . "molecular entity role"@en . . _:vb50934974 . _:vb50934974 . . "A molecular entity role is a chemical entity role held by a molecule."@en . . "SIO_000889" . _:vb50934974 . _:vb50934974 . _:vb50934974 .