Question: The 1963 Ankara mid-air collision involved an airplane from a company with a head office in what city? 
Sentence (from "Middle East Airlines"): Middle East Airlines – Air Liban S.A.L. (Arabic: طيران الشرق الأوسط ـ الخطوط الجوية اللبنانية‎ ‎ "Ṭayyarān al-Sharq al-Awsaṭ - al-Khuṭūṭ al-jawiyyah al-lubnāniyyah"), more commonly known as Middle East Airlines (MEA) (Arabic: طيران الشرق الأوسط‎ ‎ "Ṭayyarān al-Sharq al-Awsaṭ"), is the national flag-carrier airline of Lebanon, with its head office in Beirut, near Beirut–Rafic Hariri International Airport.
Relevant evidence: Yes