Input: Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter.
"Which scientist demonstrated that sound waves cannot travel through empty space by placing a ticking clock in a sealed glass jar?" is "Einstein"?
Output: no
Input: { { plot } } In 1964 , in the peak of Beatlemania , a reluctant John Lennon is persuaded by manager Brian Epstein to meet Freddie Lennon , the father who abandoned him seventeen years earlier , with the press in attendance . When they meet , John accuses his father of abandoning him , but his father says that '' he left it up to John . '' John and Brian quickly leave the meeting . The movie then jumps to 1967 , after Brian Epstein has died . The Beatles are giving a press conference about their new film, Magical Mystery Tour . John is skeptical about the film , but Paul ( ( ( Andrew Scott convinces him to go through with the idea . John then invites his father to his mansion to live with him . Freddie Lennon arrives and meets his grandson , Julian . Sitting with his wife , John reads the criticism of Magical Mystery Tour , while comparing his wife to Brigitte Bardot , whom he says he will meet after he returns from India . John finds a letter addressed to him , with the word '' Breathe '' written on it . Later , after finding his father in a neighbor's house , Freddie reveals that he has a 19 year old girlfriend named Pauline , with whom he wants to live . Lennon accuses his father of leaving him again , and then leaves , after telling his father that he wo n't live with him anymore . After meeting Maharishi Mahesh Yogi , the Beatles quickly return to London , and in a press conference they say they made a mistake when they trusted Maharishi . The journalists are curious about the Beatles new business -- Apple Records .
"How many times in the story did Freddie Lennon leave or abandon John Lennon?" is "2"?
Output: yes
Input: On Thursday Fort Waelhem succumbed after a magnificent resistance. The garrison held it until it was a mere heap of ruins, and, indeed, they had the greatest difficulty in making their way out. I think that there is very little doubt that the Germans were using against these forts their largest guns, the great 42-centimetre howitzers. It is known that two of these were brought northwards past Brussels after the fall of Maubeuge, and a fragment which was given to us was almost conclusive. It was brought to us one morning as an offering by a grateful patient, and it came from the neighbourhood of Fort Waelhem. It was a mass of polished steel two feet long, a foot wide, and three inches thick, and it weighed about fifty pounds. It was very irregular in shape, with edges sharp as razors, without a particle of rust upon it. It had been picked up where it fell still hot, and it was by far the finest fragment of shell I have ever seen. Alas we had to leave it behind, and it lies buried in a back-garden beside our hospital. Some day it will be dug up, and will be exhibited as conclusive evidence that the Germans did use their big guns in shelling the town.
"How was the gun fragment found? (By whom, where, in what condition?)" is "It was found by a patient, possibly after the fall of Maubeuge, came from Fort Waelhem and was found still hot"?
Output:
yes