Question: Which airline headquartered in Madrid, Spain operated an Air Algerie flight which crashed in Mali in 2014?
Sentence (from "Air Algérie Flight 5017"): Air Algérie Flight 5017 (AH5017/DAH5017) was a scheduled international passenger flight from Ouagadougou, Burkina Faso, to Algiers, Algeria, which crashed in Mali, near Gossi, on 24 July 2014.
Relevant evidence: Yes