sentence: My main tasks were : taking care of children aged 10 - 15 , organising events such as parties , swimming competitions , outside sports matches etc . , and overall , I was in charge of preparing and cooking meals for more than 50 people .
modified: My main tasks were : taking care of children aged 10 - 15 , organising events such as parties , swimming competitions , outside sports matches etc . , and overall I was in charge of preparing and cooking meals for more than 50 people .
transformation: PUNCT