Question: South Improvement Company was one part of which oil magnate's attempts to control this industry?
Sentence (from "Alexander Mantashev"): Alexander Mantashev (Armenian: Ալեքսանդր Մանթաշյանց , Aleksandr Mantashiants; Russian: Александр Иванович Манташев , Aleksandr Ivanovich Mantashev; 3 March 1842 – 19 April 1911 and was buried on 30 April in the Armenian Pantheon of Tbilisi) was a prominent Armenian oil magnate, industrialist, financier, and a philanthropist.
Relevant evidence: No