Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: Rentrak Corporation (NASDAQ: RENT) is a global media measurement and research company serving the entertainment industry. 
 Question: To which stock exchange does Rentrak belong?
Example Output: nasdaq

Example Input: Context: Future Life Pets By DogTown Media, LLC Open iTunes to buy and download apps. *Price: $2.99 *Category: Lifestyle *Updated: Jan 07, 2012 *Version: 1.1 *Size: 36.3 MB *Language: English *Seller: DOG TOWN MEDIA *(c) DogTown Media LLC Description DISCOVER FUTURE LIFETIMES WITH YOUR PETS You can be transported into the future to be reunited with your pet in another place and time. As an internationally recognized psychic and best-selling author, Anne Jirsch will be your guide in this fascinating meditation game. Future Life Pets will take you into a state of deep relaxation to help you understand this special condition. With expert hypnosis you can discover how your paths will cross in your future lifetime. WHAT PEOPLE ARE SAYING "I immediately saw I was riding a tall black and white horse and you've guessed it --it was my dog and this time he was bigger than ever." --Mike from Kansas City. "Seeing both my cats in the future lifetime has given me so much joy. They are both cats again next time around, only a lot bigger and smoother. I clearly saw them both lie by my feet just as they do right now." --Felicity from Manchester, UK. The regular buyers of Anne's products include heads of industry, politicians, and celebrities of all kinds. She is a world famous psychic and author of three books Instant Intuition, The Future is Yours, and Cosmic Energy. More than a billion people in the world believe in the truth of meditation, through which we'll gain a greater understanding of our pets and ourselves. Prepare for the experience as the results are astonishing. 
 Question: If we want to use the app of Future Life Pets, what kind of language should we know?
Example Output: english

Example Input: Context: In the opening scene, private detective Sam Grunion (Groucho Marx) explains to the viewers that he has been searching for the extremely valuable Royal Romanoff diamonds for eleven years, and his investigation leads him to a troupe of struggling performers, led by Mike Johnson (Paul Valentine), who are trying to put on a musical revue called 'Love Happy'.Grunion notes that the impoverished young dancers would starve were it not for the sweet, silent Harpo (Harpo Marx), at Herbert & Herbert, a gourmet food shop that also trafficks in stolen diamonds. Harpo kindly helps ladies with their shopping bags, all the while pilfering their groceries and stuffing them in the pockets of his long trench coat. When the elegant Madame Egelichi (Ilona Massey) arrives, store manager Lefty Throckmorton (Melville Cooper) tells her that "the sardines" have come in. Harpo sneaks into the basement and watches as Lefty lovingly unpacks a sardine can marked with a Maltese cross, and swipes the can from Lefty's pocket, replacing it with an unmarked one. Madame Egelichi, who has gone through eight husbands in three months in her quest for the Romanoff diamonds, is furious when Lefty produces the wrong can. When Lefty remembers seeing Harpo in the basement, she orders him to call the police and offer a $1,000 reward for his capture.At the theater, meanwhile, unemployed entertainer Faustino the Great (Chico Marx) asks Mike for a job as a mind-reader, and when Faustino's clever improvisation stops the show's backer, Mr. Lyons (Leon Belasco), from repossessing the scenery, Mike gratefully hires him. Harpo, who is secretly in love with dancer Maggie Phillips (Vera-Ellen), Mike's girl friend, gives her the sardine can, and she says she will eat them tomorrow. A policeman sees Harpo inside the theater and brings him to Madame Egelichi, who turns Harpo over to her henchmen, Alphonse (Raymond Burr) and Hannibal (Bruce Gordon) Zoto. After three days of interrogation, Harpo still refuses to talk, and when he is left alone, he calls Faustino at the theater, using the bike horn he carries in his pocket to communicate. Madame Egelichi listens on the extension as Faustino declares that there are plenty of sardines at the theater, and she goes there at once.Meanwhile, Mike has just finished telling the troupe that they do not have enough money to open when Madame Egelichi arrives and offers to finance the show. Mike cancels his plans to take Maggie out for her birthday so that he and his new backer can discuss the arrangements. In the alley outside the theater, Harpo, having escaped from Madame Egelichi's suite, finds the diamonds in the sardine can which had been set out for a cat, and puts them in his pocket. When he finds Maggie crying in her dressing room, Harpo takes her to Central Park, where he plays the harp for her and gives her the diamonds as a birthday gift.On the opening night of the show, Grunion is visited by an agent of the Romanoff family, who threatens to kill him if he does not produce the diamonds in an hour. At the theater, Lefty and the Zoto brothers spy through a window as Maggie puts on the diamond necklace, but Mike asks her not to wear it, promising to buy her an engagement ring instead. As they kiss, Maggie removes the necklace and drops it on the piano strings. The curtain goes up, and when Harpo sees Lefty and the Zoto brothers menacing Maggie, he distracts them with a piece of costume jewelry and leads them up to the roof.Meanwhile, on stage, Faustino plays the piano, and when he strikes the keys forcefully, the diamond necklace flies into the air, drawing the attention of Madame Egelichi, who is watching from the audience. Faustino pockets the diamonds, then rushes to the roof to help Harpo. Madame Egelichi shows up with a gun and demands the necklace, but Faustino gives her the fake diamonds. After tying up Lefty and the Zotos and recovering the real diamonds, Harpo encounters Grunion, who has been hiding on the roof. Harpo drops the diamonds in Grunion 
 Question: What does Harpo carry to communicate with?
Example Output:
bike horn