Venice [Italy], August 29 (ANI): American actor Sigourney Weaver got emotional as she received the Golden Lion Lifetime Achievement Award at the opening ceremony of the 81st Venice Film Festival, which marked a return on Wednesday night. The legendary star of films such as ‘Alien,’ ‘Avatar’ and ‘Gorillas in the Mist’ was awarded the Golden Lion for lifetime achievement in honour of her work spanning 45 years ahead of the world premiere of “Beetlejuice Beetlejuice’. In award receiving speech, Weaver said, “I’m sure I’m dreaming. I want to roar,’ reported Deadline. The three-time Oscar nominee t…