Please answer the following question: Question: who are overhear the ambulance call on a police scanner, and tell Heddon? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: Straw Dogs Context: The film opens with an out-of-focus image of what appears to be a swarm of bugs crawling about. But as the image sharpens, schoolchildren are at play in, of all places, a cemetery. The setting is the isolated village of Wakely on the coast of England.American mathematician David Sumner (Dustin Hoffman) is walking along a road while his newly acquired wife and one-time resident, Amy Sumner (Susan George), is parading braless and carrying a rather nasty-looking device called a 'mantrap'. David is introduced by Amy to Charlie Venner (Del Henney), an intense young man who is also an ex-lover of David's wife. David also meets two of Charlie's cousins named Janice Hedden (Sally Thomsett), and Bobby (Len Jones), her young brother.As Janice and Bobby are putting the mantrap in the back of the car, David explains that he came to Wakely, on sabbatical, to write a treatise on celestial navigation. To ensure the peace and quiet needed to complete his book, David agrees to hire Charlie and a mate to help several workmen make repairs on his new home.David enters the local pub, where he meets gruff bartender Harry Ware (Robert Keegan) and apologetically asks for any brand of American cigarettes they might have. As David makes way in the pub, Charlie discusses with Amy the possibility that she led him on in the old days with her taunting advances and was "begging for it". Amy, humiliated, retorts by spurning him. This is witnessed by David in the pub.In the pub, David sees Janice's father and town patriarch Tom Hedden (Peter Vaughan), falling into an argument with Harry over a pint. Charlie tries to calm down his uncle. A fight ensues. A repentant Tom makes amends by paying for the American's cigarettes. But David turns down Tom's offer and exits the pub.David and Amy are driving to their new cottage. They meet Norman Scutt (Ken Hutchison), who's busy fixing up their garage. While there, they also meet Chris Cawsey (Jim Norton), a giggling bloke who specializes in ridding the garage of rats. Chris and Norman are aware of the...
Answer:
Charlie and Norman overhear the ambulance call on a police scanner