Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: What is the name of Lorraine sister name? Movie plot title: Back to the Future Movie plot: The title logo appears on a black background. The scene opens in Dr. Emmett Brown's (Christopher Lloyd) garage/home laboratory as the camera pan over a large collection of clocks. A robotic tin can opener opens a tin of spoiled dog food and empties the contents into an overflowing dog food bowl marked "Einstein". The television set and radio turn on. On the TV, we see the ending of an advertisement, followed by a woman newscaster announcing the recent theft of a case of plutonium.The front door of the garage opens, and Marty McFly (Michael J. Fox) comes in. Marty calls out, then reaches down to partly lift up the doormat. He places a set of keys under the doormat, then drops it back down. Marty enters the garage, calling out for Doc and whistling for Einstein. He comments on the mess the place is in.Marty puts down his skateboard and it rolls along the floor until it hits a hidden box of plutonium. He turns on Doc's amplifier system, turning all the settings to maximum. A hum grows louder in the background. Marty plugs his electric guitar into a huge amplifier, pauses, and then plucks a string. The amplifier blows up, the impact throwing Marty back against a bookshelf, which falls, causing the books and papers on it to fall off and land on his head. Marty lifts up his sunglasses and we finally get to see his face."Whoa... rock and roll," he says, when a loud ringing fills the garage. It sounds like a fire alarm, but then turns out to be just the telephone. Marty scrambles off the ground and answers it. It's Doc, who asks Marty to meet him that night at the Twin Pines Mall at 1:15 a.m. Marty asks him where he's been all week. Doc says that he has been working. Marty tells him that his equipment had been left on all week. Remembering, Doc tells Marty not to hook up to the amplifier. "There's a slight possibility of overload," he says. Marty glances at the destroyed amplifier, and says that he'll keep that in mind.Just then, every single one of the numerous clocks go off at once, chiming loudly, and Doc asks...
A:
Linda