sentences:  The 52nd edition of the Eurovision Song Contest took place in Helsinki, Finland, and consisted of a semi-final on 10 May, and the grand final two days later on 12 May 2007.According to the Eurovision rules at the time, selected participating countries, apart from the host country and the "Big 4", consisting of , , , and the , were required to qualify from the semi-final to compete for the grand final.However, the top ten countries from the semi-final progressed to the grand final.