Question: The Prelude field was estimated to contain how many cubic feet of natural gas reserves?
Sentence: On 20 May 2011, Royal Dutch Shell's final investment decision for the world's first floating liquefied natural gas (FLNG) facility was finalized following the discovery of the remote offshore Prelude field—located off Australia's northwestern coast and estimated to contain about 3 trillion cubic feet of natural gas equivalent reserves—in 2007.
Answer in sentence: yes