Table:
text: 2011 Grand Prix motorcycle racing season
Grands Prix
Grands Prix
Round Date_ Grand_Prix Circuit MotoGP_winner Moto2_winner _125cc_winner Report
2 3 April bwin Spanish Grand Prix Jerez Jorge Lorenzo Andrea Iannone Nicolás Terol Report
3 1 May bwin Portuguese Grand Prix Estoril Dani Pedrosa Stefan Bradl Nicolás Terol Report
4 15 May Monster Energy French Grand Prix Le Mans Casey Stoner Marc Márquez Maverick Viñales Report
5 5 June Aperol Catalan Grand Prix Catalunya Casey Stoner Stefan Bradl Nicolás Terol Report
6 12 June AirAsia British Grand Prix Silverstone Casey Stoner Stefan Bradl Jonas Folger Report
8 3 July Telecom Italia Mobile Italian Grand Prix Mugello Jorge Lorenzo Marc Márquez Nicolás Terol Report

Question: How many MotoGP winners were there when the Catalan circuit was in the 2011 motorcycle Grand Prix season?

Question: Who are all the motogp winners in the 2011 motorcycle grand prix racing season when the circuit was catalonia?