. "301580601"@en-us . "301580601"^^ . . "necessary (for someone) as a duty or responsibility; morally binding; \"it is incumbent on them to pay their own debts\""@en-us . "0"^^ . "sub"^^ . "incumbent"^^ . "incumbent"@en-us . . "0.875"^^ . "01580601-a"^^ . "sub"^^ . . .