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: The French have always wanted to know what it means to be aFrenchman.
Sent 2: Their history has been a constant quest for national identity: a conflict between strong regional loyalties and central authority.
Sent 3: In about 2000b.c.
Sent 4: Celtic tribes probably from eastern Europe came looking for greener pastures in the areas that are now Franche-Comte, Alsace, and Burgundy.
Sent 5: At the same time, migrants from the Mediterranean countries were trickling into the south.
Sent 6: The first recorded settlement was the trading post set up by Phocaean Greeks from Asia Minor at Massalia (Marseilles) around 600b.c.
Sent 7: , followed by other ports at Hyeres, Antibes, and Nice.
Sent 8: But the Greeks developed few contacts with the interior beyond a little commerce in olives and wine with the Celts of Burgundy.
Sent 9: When their position was threatened by Ligurian pirates at sea and warlike tribes from inland, the merchants of Marseilles called on Rome for help.
Sent 10: From Gaul to France In 125b.c.
Sent 11: , the Romans came in force, conquered the "Gallic barbarians," and set up a fortress at Aquae Sextiae (Aix-en-Provence).
Sent 12: They took advantage of this new stronghold to create Provincia (now Provence), stretching from the Alps to the Pyrenees, in order to guarantee communications between Italy and Spain.
Sent 13: When this province was endangered by fresh attacks from the north, Julius Caesar himself took charge, conquering practically the whole of Gaul by 50b.c.
Sent 14: Caesar drew Gaul's northeastern frontier at the Rhine, taking in present-day Belgium, and warned that the Germanic tribes across the river the Franks (after whom France is named), Alamans, and Saxons would always threaten the security of the frontier.
Sent 15: The Romanization of Gaul sent the most energetic warriors to defend the outposts of the empire while their families settled down to work the land or build towns such as Lyon, Orange, Arles, and Nimes, and the first great highways between them.
Sent 16: At the same time, merchants built up a thriving trade with the rest of the Roman Empire.
Sent 17: The pattern for the peasantry and bourgeoisie of France was thus established.
Sent 18: Christianity was introduced into Gaul in the first century a.d.
Question: When did the Romans set up a fortress at Aquae Sextiae (Aix-en-Provence)? (A) 50 B.C (B) 50b.c (C) 125 B.C (D) 1999 (E) 125b.c.

Output: C, E.

Input: Consider Input: Paragraph- Sent 1: Milwaukee, Wisconsin (CNN) -- President Barack Obama, in a bid to create jobs and boost economic growth, called on Congress on Monday to pass a $50 billion plan to renew the country's transportation infrastructure.
Sent 2: His address was the first of two speeches the president is scheduled to make this week to frame his administration's ongoing response to the recession, less than two months ahead of midterm elections in which Democratic majorities in the House and Senate are in jeopardy.
Sent 3: "Today, I am announcing a new plan for rebuilding and modernizing America's roads, and rails and runways for the long term," said Obama, who spoke on Labor Day in Milwaukee, Wisconsin -- a state with competitive gubernatorial and U.S. Senate races.
Sent 4: "We used to have the best infrastructure in the world.
Sent 5: We can have it again," he said to loud cheers from a crowd of union workers.
Sent 6: The proposal envisions -- over a six year period -- rebuilding 150,000 miles of roads, 4,000 miles of rail and 150 miles of airport runways.
Sent 7: It also would include modernizing the nation's air traffic control system in an effort to reduce delays and travel time.
Sent 8: "This will not only create jobs immediately.
Sent 9: It's also going to make our economy hum over the long haul," said the president.
Sent 10: Obama hopes to work with Congress to enact an up-front investment of $50 billion -- an amount a White House statement said would represent a significant chunk of new spending on infrastructure.
Sent 11: The investment would then be paired with what the administration called a framework to improve transportation spending.
Sent 12: The long-term plan would include the establishment of an Infrastructure Bank, which would leverage federal dollars and focus on projects that could deliver the the biggest bang for the buck, Obama said.
Sent 13: The president stressed the need for Democrats and Republicans to work together on the transportation initiative, which would need to be approved by Congress.
Question: What as President Obama asking Congress for to implement his plan to renew the country's transportation infrastructure? (A) Six years to rebuild many roads, rails, and runways (B) The creation of the "Infrastructure Bank" to help fund the renewal in the most efficient way (C) To implement the "National Bank (D) To be proud of him (E) For them to create a six year plan to rebuild roads, rails, and runways (F) To work together on his new plan and to support it (G) A $50 billion investment.

Output: A, B, F, G.

Input: Consider Input: Paragraph- Sent 1: Mechanical energy is a combination of the energy of motion or position.
Sent 2: This type of energy describes objects that are moving or could move.
Sent 3: A moving ball can have energy from motion.
Sent 4: An arrow can also have the energy of motion.
Sent 5: Both are types of mechanical energy.
Sent 6: Can you think of some other examples?
Sent 7: Where does the energy of motion come from?
Sent 8: It comes from the energy created by position.
Sent 9: This energy is stored energy.
Sent 10: This means it is not moving yet, but it has the potential to move.
Sent 11: How can you store energy?
Sent 12: The arrow gains energy from the drawn bow.
Sent 13: As the arrow is released, the bow releases its stored energy and puts the arrow into motion.
Sent 14: Can you think of some other ways to store energy using position?.
Question: What are two objects mentioned that can have energy from motion? (A) Bow and arrow (B) Ball and arrow (C) A moving ball and an arrow (D) Book and ball (E) Ball, bow (F) Car and wind.
Output: B, C.