You need to read the given passage and construct a question about the information present in the passage. The question should be answerable from the passage. Most importantly, only those questions are allowed whose answers cannot be determined from a single sentence. Do not generate questions that require only a single sentence to answer. Instead, try to combine two sentences and create a question from that combination. Do not create open-ended questions, i.e., the answers to them cannot be found precisely from the information provided in the passage.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- Jo-Wilfried Tsonga ended Roger Federer's hopes of winning a record-equaling seventh Wimbledon title on Wednesday as the French 12th seed staged a stunning fightback to reach the semifinals.
Sent 2: Federer appeared to be cruising into the last four after winning the first two sets, but Tsonga inflicted the Swiss world No. 3's first defeat from that vantage point in 179 grand slam matches.
Sent 3: It was only the third time in the 29-year-old's glittering career that the 16-time grand slam champion had surrendered a two-set lead.
Sent 4: Tsonga, ranked 19th in the world, triumphed 3-6 6-7 (3-7) 6-4 6-4 6-4 on Centre Court, serving out to love as he earned a clash with second seed Novak Djokovic.
Sent 5: The Serbian, who beat Tsonga in the 2008 Australian Open final, ended the dream run of Australian 18-year-old Bernard Tomic.
Sent 6: Tsonga defeated Federer for just the second time in six meetings, their first on grass.
Sent 7: "It was amazing.
Sent 8: I played unbelievable.
Sent 9: It's never easy to come back against Roger.
Sent 10: I'm so happy, it's crazy," the 26-year-old told reporters after reaching the semifinals at Wimbledon for the first time.
Sent 11: "He's the biggest champion in the sport.
Sent 12: He has achieved so much and is the best player in the world.
Sent 13: To be two sets down and come back was unbelievable.
Sent 14: I served really well.
Sent 15: Against Djokovic I will have to come out and do the same again."Sent 16: Federer has now lost in the quarterfinals two years in a row, being beaten by eventual runner-up Tomas Berdych in 2010.
Sent 17: "Jo played great.
Sent 18: Really from start to finish I don't remember seeing a break point after I broke him in the first game," Federer said.

Output: The defeat of Federer by Tsonga was the first loss from a two-set lead in how many grand slam matches, and how many times has Roger Federer lost from this same vantage point?


Input: Consider Input: Paragraph- Sent 1: Energy is the ability to do work.
Sent 2: When work is done, energy is transferred from one object to another.
Sent 3: Energy can exist in different forms.
Sent 4: Most forms of energy can also be classified as kinetic or potential energy.
Sent 5: Kinetic energy is the energy of motion.
Sent 6: Things with kinetic energy can do work.
Sent 7: Kinetic energy depends on an objects mass and speed.
Sent 8: Potential energy is stored energy.
Sent 9: It may be because of its position or shape.
Sent 10: It includes gravitational potential energy and elastic potential energy.
Sent 11: Gravitational potential energy depends on an objects weight and height above the ground.
Sent 12: Elastic energy depends on an objects ability to return to a normal shape after it is stretched or squeezed Energy can be converted from one type or form of energy to another.
Sent 13: Energy often changes between potential and kinetic energy.
Sent 14: Energy is always conserved during energy conversions.

Output: What happens when work is done?


Input: Consider Input: Paragraph- Sent 1: Allan crouched over his desk once more, pen in hand and mind blank.
Sent 2: He contemplated a story, an outline he had laboriously constructed some time ago.
Sent 3: He had filled his pen and raised it, the nib descending towards the paper, before the sound came: the gentle, persistent tapping of the gnarled, primeval willow touching the window with long, insistent fingers.
Sent 4: His eyes awoke with a passionate, determined flame, though the only light came from the glutted moon.
Sent 5: Allan filled page after page, the words escaping from his mind onto the paper.
Sent 6: Where before they had marched in regiments, practiced in ranks and followed their leaders' commands, the words now escaped in their true forms, unhindered by any stricture.
Sent 7: He continued long into the night, until the eldritch orb had sunk into the waiting hands of the willow, raised perpetually skyward.
Sent 8: Arthur looked up from the results of a night's frenzied labors and looked Allan in the eye.
Sent 9: "What is this?"Sent 10: he queried, indicating the pages he held in his left hand.
Sent 11: "I decided that… since I wasn't having much success with more - traditional - stories, I might see what sort of work I produced if I let my imagination go freely," Allan replied, somewhat less self-assured than he had been the previous night.
Sent 12: "What in G-d's name could have possessed you to do such a thing," cried Arthur, nearly raising his voice.
Sent 13: "After all I said the day before, why have you abandoned centuries of literary progress for some self-indulgent fantasy?"Sent 14: He shook the papers at Allan, raising them like a belt above the head of a disobedient son.
Sent 15: "This is nothing but a glorified Grimm's tale, a miscarried child of Stoker, a creation less fit to be published than to be told around an open fire at the hovel of some peasant!"Sent 16: He spoke the last word with such heavy intonation that Allan shrank back before the physical wave of sound emanating from Arthur's throat.
Sent 17: "Do you hate the modern system of literature?
Sent 18: Do you personally despise the works the Enlightenment or the progress made since Shakespeare??"Sent 19: For a moment, Allan could hardly do more than shake his head.
Sent 20: "No, of course not… I- " "Then why," Arthur barreled on, "do you disregard them all and return to this superstitious babble, this morbid, paganistic drivel?.


Output: What did Allan contemplate over his desk?


