Question: What airline headquarted in Immeuble La Rotonde in Douala took over Cameroon Airlines Corporation in March 2008?
Sentence (from "Camair-Co"): The Cameroon Airlines Corporation, trading as Camair-Co, is an airline from Cameroon, serving as flag carrier of the country, a role which was previously filled by the now-defunct Cameroon Airlines.
Relevant evidence: No