possession

means the actual, physical possession or the constructive possession (which shall be found only if the person has exclusive control over the prohibited substance or method or the premises or property in which a prohibited substance or method exists): Provided that, if a person does not have exclusive control over the prohibited substance or method or the premises in which a prohibited substance or method exists, constructive possession shall only be found if such a person knew about the presence of the prohibited substance or method and intended to exercise control over it: Provided further that there shall be no anti-doping rule violation based solely on possession if, prior to receiving notification of any kind that such a person has committed an anti-doping rule violation, the person has taken concrete action demonstrating that the person no longer intends to have possession and has renounced the person's previous possession.