Simplify the following text for a Grade 5 native English-speaking person.
Original: The Primera DivisiÃ n ( First Division ) of the Liga de FÃ tbol Profesional ( Professional Football League ) , commonly known as La Liga ( The League ) or , for sponsorship reasons , Liga BBVA ( BBVA League ) since 2008 , is the top professional association football league in Spain .
Simplified: La Liga is a football league which is top division in Spain .