Question: Who is Muhammad Al-Sabah's paternal grandfather?
Sentence (from "Mubarak Al-Sabah"): Mubarak was also the father of two rulers of Kuwait that succeeded him, Jaber and Salim, from which the Al- Jaber and Al- Salim in the Al- Sabah family branches originated respectively, and is the paternal ancestor of all successive rulers and prime ministers of Kuwait.
Relevant evidence: No