1. Tupi people of Brazil and Paraguay.

2. BG is a joint venture partner at Tupi.

3. The Tupi are in South America.

4. The Wajapi of the Tupi - guarani cultural - linguistic group are indigenous to the northern Amazonian region.

5. Found in 2006, the formerly named Tupi Field is thought to contain about 8 billion barrels of recoverable oil.

6. Oil for the exchange will come from at least six fields in the subsalt region, most of which are adjacent to major offshore discoveries such as Franco and Tupi finds.

7. BG Group Plc rose to the highest in 2 1/2 years after saying it will get about 600 million barrels of oil from initial operations at Brazil's Tupi and Guara fields.

8. Energy Information Administration, Brazil had the second-largest crude reserves in the region prior to the Tupi discovery.