Question: Abdelhamid Abou Zeid in 2012 took control of an ancient city in Mali, situated 20 km north of what river?
Sentence (from "Abdelhamid Abou Zeid"): He competed as the chief rival of Mokhtar Belmokhtar, an Algerian national who had become the major commander in AQIM and later head of his own group.
Relevant evidence: No