What is the fine-grained topic of the following text: Jointly developed by the World Resources Institute (WRI), C40 Cities Climate Leadership Group (C40), and ICLEI - Local Governments for Sustainability (ICLEI), and over 200 stakeholders, the GPC was formally launched on December 8, 2014, at a COP20 event in Lima, Peru, that featured mayors and city officials from around the world. Only return the topic.
Launch of the Global Protocol for Community-scale Greenhouse Gas Emission Inventories (GPC)