 Complete the following phrase:  In 2006, La Liga had two out of the four semi-finalists in the UEFA Champions League once again with Barcelona and Villarreal; Barcelona went on to become European champions for a second time by beating Arsenal 21 in the final. Meanwhile, in the UEFA Cup, Sevilla followed in Barcelonas footsteps by beating a Premier League side in a European final when they defeated Middlesbrough 40. With Barcelona and Sevilla, La Liga took home both European trophies on offer in 2006. Sevilla went on to beat Barcelona 30 in the all-Spanish 