Question: What did Mariana Kovacevic use to treat the injury of Asamoah Gyan, a Ghanaian professional footballer for a suprising fast recovery time?
Sentence (from "Radiation effects on optical fibers"): The loss of power or 'darkening' occurs because the chemical bonds forming the optical fiber core are disrupted by the impinging high energy resulting in the appearance of new electronic transition states giving rise to additional absorption in the wavelength regions of interest.
Relevant evidence: No