Simplify the following text for a Grade 10 native English-speaking person.
Original: After the 7 July 2005 London bombings Livingstone , from the 117th IOC Session in Singapore , where it had recently been announced London would host the 2012 Olympic Games , delivered a speech .
Simplified: At the beginning of July 2005 Livingstone was in Singapore , shepherding London 's bid for the 2012 Olympic Games through the decision-making of the 117th IOC Session . On the 7 July London was bombed in four co-ordinated attacks , and Livingstone responded with an address that ended :