question: Because Mohammed was `` ummi , '' what would he not have known about that lent credence to his prophethood ?
answer: earlier sacred texts
turker_answer: Because Mohammed was `` ummi '' , he not have known about earlier sacred texts which lent credence to his prophet-hood .
rule-based: Because Mohammed was `` ummi , '' earlier sacred texts would he not have known about that lent credence to his prophethood .