I want to know the answer to the following question:
The Prelude field was estimated to contain how many cubic feet of natural gas reserves?
All the background I'm provided with is that "FLNG technology is based on liquefied natural gas (LNG) developments that were pioneered in the mid-20th century and facilitates the exploitation of untapped natural gas reserves located in remote areas, often too small to extract any other way.". Is that enough to answer the question?