user: Question: In what stage did Jaime Vergara won, Team Classification was given to EPM-UNE and Mountain Classification winner was Oscar Solis?
Columns: ['Stage', 'Winner', 'General classification', 'Points classification', 'Mountains classification', 'Sprints classification', 'Team classification']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Ind Ant-Idea-Fla-Lot De Medellín', 'Sergio Luis Henao', 'no award', 'no award', 'no award', 'Ind Ant-Idea-Fla-Lot De Medellín']
SQL:

assistant: SELECT "Stage" FROM "Table" WHERE "Team classification" = 'EPM-UNE' AND "Mountains classification" = 'Oscar Solis' AND "Winner" = 'Jaime Vergara';