Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: The Copa America, which begins in Chile on Thursday night, is a showcase of the best South American talent, from Lionel Messi to Neymar to James Rodriguez. But what about those up-and-coming players hoping to make a name for themselves during the tournament? We take a look at 10 promising young stars to watch. It was what you might call a baptism of fire... AC Milan prodigy Gamarra, 18, was handed his international debut for Bolivia in their 5-0 thrashing at the hands of Argentina last weekend. Hopefully things will get better for the teenager, who joined Milan's academy last year and is described as the 'Bolivian Pirlo' because of his well-developed passing skills in central midfield.Copa America kicks-off in Chile on Thursday nightTournament is perfect chance for rising stars to boost their profileMan United's Angelo Henriquez will hope to impress for host nationGeferson, 21, is late call-up to Brazil squad after injury to MarceloSebastian Gamarra of Milan is described as the 'Bolivian Pirlo'CLICK HERE to read our ultimate preview of the Copa America 
 Question:The 21-year-old was called up to Dunga's squad as a replacement for the injured _, despite his only previously international experience coming for the Selecao's under 17 team.

Marcelo