Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: The government has been urged to use the success of the 2012 Olympics to transform east London and build a new city "fit for the future".

London 2012 Olympic legacy: 'Success must be built on'