well you know i think we have to look at alan g. and chill gas in quite a different way. the shale gas first of all we know the story about the u.s. for a large or rather unexpected volumes of shale gas have come to the market there. we are now as an industry looking very hard at what could be the possibilities elsewhere in the world and what i'm hearing about europe in that respect is that yes there are in geological terms certain possibilities it is not yet quite clear how complicated some of the production will be in europe it could be quite different from the u.s. and our number of environmental issues around shale gas. which may also delaying some of its development particularly in europe which is more densely populated than most places. and we care for have to wait and see about the general view is that we would not it's. backed significant volumes of shale gas to complete the market in europe until at least twenty twenty five or beyond. there may be some production in some parts of europe before that but that would not really impact the south stream project at all