Take context from the input text and decide on the accurate relationship between 'BG Group' and 'natural gas' from the options provided.
Options: platform, product/material produced, chief executive officer, distributed by

Energy company BG Group (LSE: BG.L - news ) has started up and loaded its first liquefied natural gas from the second production train at the Queensland Curtis LNG (QCLNG) facility in Australia.
product/material produced