They both got selected already. We are talking about application not entry into the lottery.I guess it is the way this lottery is... Even though I did not have any brother or sister living in Canada, I still think if you have a chance to sponsor for your parents, you should be allowed to do it. As a matter of facts, even though brothers or sisters, they are all independent individuals who happen to have the same parents and as such, they are all eligible to enter the luck draw. The parents/grandparents of such big family would be lucky in this scenario!