Question: What item was used by Mariana Kovacevic to heal the football striker Asamoah Gyan during the 2012 African Cup of Nations?
Sentence (from "USM Alger in African football"): Qualification for Algerian clubs is determined by a team's performance in its domestic league and cup competitions, USM Alger have regularly qualified for the primary African competition, the African Cup, by winning the Ligue Professionnelle 1.
Relevant evidence: No