You are given a paragraph, a question and some answer options (associated with "A", "B", "C", "D", etc.) You need to list all the correct answer options with their associated letters (e.g. "A" can be a valid answer). Note that sometimes, more than one option can answer the question correctly and completely. In those cases, please generate all such options separated by a comma (e.g. "A, B" is a valid answer). Do not generate anything else apart from one or more of the following characters: 'A', 'B, 'C', 'D', etc.

Input: Consider Input: Paragraph- Sent 1: A married couple and their three young adult children , a son and two daughters , live in a large compound with a garden and a swimming pool .
Sent 2: A tall fence surrounds the property and the children have never been on the other side of it , for their parents have kept them unaware of the outside world , even of the existence of the telephone .
Sent 3: They are taught different meanings for everyday words .
Sent 4: For example , they are told that a '' zombie '' is '' a small yellow flower , '' and that '' sea '' is a chair .
Sent 5: The parents promise that each child will be ready to venture outside the compound once she or he has lost a dogtooth .
Sent 6: Although the children are told they have a brother just on the other side of the barrier , he never appears .
Sent 7: The only non-family member to come into the house is Christina , a young woman who works as a security guard at the father's factory .
Sent 8: She is driven by the father to the compound traveling both ways blindfolded where she performs sexual favors for the son .
Sent 9: Dissatisfied with his preference for intercourse , Christina seeks oral sex from the elder daughter in exchange for a headband.
Sent 10: The elder daughter obliges but does not recognize the significance of performing cunnilingus .
Sent 11: Later , she gives the headband to her younger sister , in exchange for being licked on the shoulder , Which is marked by an unexplained scar .
Sent 12: The parents have tricked the children into believing that overhead planes are merely toys .
Sent 13: They allow the children to search for toy planes that they have planted on the grounds , and the child that finds the toy owns it .
Question: Which siblings does Christina have sexual encounters with? (A) The brother and the older sister (B) The father (C) The fathers son and elder daughter (D) The brother (E) The youngest sister.

Output: A, C, D.

Input: Consider Input: Paragraph- Sent 1: American Airlines Flight 11: FAA Awareness.
Sent 2: Although the Boston Center air traffic controller realized at an early stage that there was something wrong with American 11, he did not immediately interpret the plane's failure to respond as a sign that it had been hijacked.
Sent 3: At 8:14, when the flight failed to heed his instruction to climb to 35,000 feet, the controller repeatedly tried to raise the flight.
Sent 4: He reached out to the pilot on the emergency frequency.
Sent 5: Though there was no response, he kept trying to contact the aircraft.
Sent 6: At 8:21, American 11 turned off its transponder, immediately degrading the information available about the aircraft.
Sent 7: The controller told his supervisor that he thought something was seriously wrong with the plane, although neither suspected a hijacking.
Sent 8: The supervisor instructed the controller to follow standard procedures for handling a "no radio" aircraft.
Sent 9: The controller checked to see if American Airlines could establish communication with American 11.
Sent 10: He became even more concerned as its route changed, moving into another sector's airspace.
Sent 11: Controllers immediately began to move aircraft out of its path, and asked other aircraft in the vicinity to look for American 11.
Sent 12: At 8:24:38, the following transmission came from American 11: American 11: We have some planes.
Sent 13: Just stay quiet, and you'll be okay.
Sent 14: We are returning to the airport.
Sent 15: The controller only heard something unintelligible; he did not hear the specific words "we have some planes."Sent 16: The next transmission came seconds later: American 11: Nobody move.
Sent 17: Everything will be okay.
Sent 18: If you try to make any moves, you'll endanger yourself and the airplane.
Question: How long was there between the flight failing to heed instructions and the transponder being turned off? (A) 9 minutes (B) 7 minutes (C) 7 Minutes (D) 11 minutes (E) 9 Miuntes (F) 1 minute.

Output: B, C.

Input: Consider Input: Paragraph- Sent 1: Though prehistoric remains from the Paleolithic, Neolithic, and Bronze Ages have been unearthed in the Manzanares Valley, prior to Madrid's sudden elevation to capital city in 1561 its history was rather undistinguished.
Sent 2: Over a period of many centuries crucial in Spanish history, Madrid's significance was negligible.
Sent 3: The Romans built their most advanced outpost on the Iberian peninsula, but left nothing of consequence in Madrid.
Sent 4: Armies of North African nomads, intent on disseminating Islam, invaded the peninsula in a.d.
Sent 5: Within 10 years, they had overrun most of Spain.
Sent 6: If Madrid played any role in these pivotal events, no record of it remains.
Sent 7: The first solid references to this obscure settlement on the Castilian plateau, guarded by the looming Guadarrama mountain range, appear in the 9th century.
Sent 8: The Arabic name for "place of many springs," variously recorded as Magerit, Mayrit or Magrit, eventually evolved into Madrid.
Sent 9: The hamlet entered historical chronicles for its military significance; it was located near the main line of resistance to the Christian reconquest.
Sent 10: Over centuries of struggle, the defending Moorish army built a full-scale fort, or Alcazar, on the heights of Madrid commanding the Manzanares valley.
Sent 11: After several unsuccessful skirmishes, the Christian forces of Alfonso VI captured Madrid in 1083.
Sent 12: The Alcazar became a fort of the crown of Castile.
Sent 13: During a counter-offensive in 1109, the town was overrun by the Moors, but the Christianized fortress held.
Sent 14: The Moors were expelled from the town, but they remained in control of southern Spain for almost four centuries.
Sent 15: Meanwhile, Madrid enjoyed brief prominence in 1308 when king Ferdinand IV and his Cortes, an early version of parliament, held a formal meeting in the fledgling town.
Sent 16: From then on, the kings of Spain began to visit Madrid, where the air was invigorating and the hunting excellent.
Sent 17: Ferdinand and Isabella, the Catholic monarchs that united all the provinces of Spain, first visited Madrid in 1477.
Question: Why did kings of Spain visit Madrid? (A) Good hunting (B) Women (C) Because the air was invigorating and the hunting was excellent (D) Good air (E) An early version of parliament, held a formal meeting in the fledgling town, the air was invigorating and the hunting excellent (F) Because of a formal meeting.
Output: A, C, D, E.