Title: Earth Summit
Content:  known as the Rio de Janeiro Earth Summit, the Rio Summit, the Rio Conference, and the Earth Summit (Portuguese: ECO92), was a major United Nations conference held in Rio de Janeiro from June 3 to June 14, 1992. Earth Summit was created as a response for member states to cooperate together internationally on development issues after the Cold War. Due to issues relating to sustainability being too big for individual member states to handle, Earth Summit was held as a platform for other member states to collaborate. Since the creation, many others in the field of sustainability show a similar development to the issues discussed in these conferences, including non-governmental organizations (NGOs). The issues 
Title: 2nd BRIC summit
Content:  The 2010 BRIC summit took place in Brasília, Brazil on April 16, 2010. This was the second BRIC summit after Yekaterinburg in 2009. The meeting took place between the four heads of government from the BRIC states following bilateral meetings in the prior days.
Title: 10th BRICS summit
Content:  The 2018 BRICS summit is the tenth annual BRICS summit, an international relations conference attended by the heads of state or heads of government of the five member states Brazil, Russia, India, China and South Africa. The summit was held in Johannesburg, South Africa, the second time the South Africa has hosted the summit after the 2013 summit. Partnership on New Industrial Revolution (PartNIR): It is a programme of partnership among BRICS nation that will focus on Maximising the opportunities arising from the fourth industrial revolution/New Industrial Revolution. It was formed at the 10th BRICS summit in Johannesburg 11th summit will be held in Brazil for that remaining partners extended full support. 4th to 7th summit at Ufa Russia are related to NDB.
Title: United Nations Conference on Sustainable Development
Content:  The United Nations Conference on Sustainable Development (UNCSD), also known as Rio 2012, Rio+20, or Earth Summit 2012 was the third international conference on sustainable development aimed at reconciling the economic and environmental goals of the global community. Hosted by Brazil in Rio de Janeiro from 13 to 22 June 2012, Rio+20 was a 20-year follow-up to the 1992 United Nations Conference on Environment and Development (UNCED) held in the same city, and the 10th anniversary of the 2002 World Summit on Sustainable Development (WSSD) in Johannesburg. The ten-day mega-summit, which culminated in a three-day high-level UN conference, was organized by the United Nations Department of Economic and Social Affairs and included participation from 192 UN member states – including 57 Heads of State and 31 Heads of Government, private sector companies, NGOs and other groups. The decision to 
Title: 2010 Lisbon summit
Content:  The summit took place in the Feira Internacional de Lisboa in Parque das Nações (Park of the Nations). It was the first summit presided over by Anders Fogh Rasmussen, who began his term as the Secretary General of NATO in August 2009.
Title: Earth Summit 2002
Content:  The World Summit on Sustainable Development 2002, took place in South Africa, from 26 August to 4 September 2002. It was convened to discuss [sustainable development] organizations, 10 years after the first Earth Summit in Rio de Janeiro. (It was therefore also informally nicknamed "Rio+10".)
Title: 12th BRICS summit
Content:  The 2020 BRICS summit was the twelfth annual BRICS summit, an international relations conference attended by the heads of state or heads of government of the five member states Brazil, Russia, India, China and South Africa. The meeting was originally scheduled to take place in Saint Petersburg from July 21 to 23, 2020, but was changed to a video conference held on November 17 due to the outbreak of the global COVID-19 pandemic. Russia last chaired 7th BRICS summit, Ufa. The 1st Sherpa meeting was held in Saint Petersburg between 11 and 13 February 2020, under chairmanship of Sergei Ryabkov, Deputy Minister of Foreign Affairs of the Russian Federation and Russian Sherpa for BRICS.
Title: 11th BRICS summit
Content:   The 2019 BRICS summit was the eleventh annual BRICS summit, an international relations conference to be attended by the heads of state or heads of government of the five member states Brazil, Russia, India, China and South Africa. The meeting was held at the Itamaraty Palace, where the Brazilian Ministry of Foreign Affairs is located. The Brazilian capital hosted the BRICS summit for the second time. The Sherpa meeting was held in the Brazilian city of Curitiba between March 14 and 15.
Title: 2021 G20 Rome summit
Content:  The 2021 G20 Rome summit was the sixteenth meeting of Group of Twenty (G20), which was held in Rome, the capital city of Italy, on 30–31 October 2021.
Title: 1992 in the environment
Content: The United Nations Conference on Environment and Development (UNCED), also known as the Rio Summit, Rio Conference, Earth Summit (Portuguese: Eco '92) was a major United Nations conference held in Rio de Janeiro. ; The Amendment Act on Reduction of Total Amount of Nitrogen Dioxide and Particulate Matters Originating from Automobiles in Designated Areasis passed in Japan, setting the maximum emissions of nitrogen dioxide (NOx) and particulate matters(PMs) allowed by trucks, buses, and diesel passenger vehicles. 

Question: when was the r10+20 summit in rio de janeiro held?
Answer: June 2012.
13 to 22 June 2012.