Tell me whether these people are chess Grandmasters or professional boxers: Nikolai Krogius, Evgeny Gleizerov, Dmitry Bivol, Nikolai Valuev, and Alexander Alekhine.
Nikolai Krogius, Evgeny Gleizerov and Alexander Alekhine are chess Grandmasters. Instead, Dmitry Bivol and Nikolai Valuev are professional boxers.
Diga-me se estas pessoas são Grandes Mestres de xadrez ou lutadores profissionais: Nikolai Krogius, Evgeny Gleizerov, Dmitry Bivol, Nikolai Valuev e Alexander Alekhine.
Nikolai Krogius, Evgeny Gleizerov e Alexander Alekhine são Grandes Mestres de xadrez. Em vez disso, Dmitry Bivol e Nikolai Valuev são pugilistas profissionais.