Premise: Keturah was a concubine and wife of the Biblical patriarch Abraham . According to the Book of Genesis , Abraham married Keturah after the death of his first wife , Sarah ; Abraham and Keturah had six sons . Some Jewish scholars have believed Keturah to be the same person as Abraham 's concubine Hagar , but this view is not universally held .
Hypothesis: Keturah knew Abraham.
Label: ENTAILMENT