You will say that aliens exist, but the final result is still not clear. Therefore, subject, message, saying that the alien does not have a clear answer, but mainly are the aliens do not exist.
To be told Aliens exist But the end result was still no clear idea. Thus aliens, say there is no clear answer, but the majority is non-existent aliens.
You've said aliens exist, but in the end, there is no clear information. So about aliens, I said also no clear but it was mostly the aliens non-existent.