Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.

Ex Input:
Paragraph- Sent 1: Heat supplies the energy that causes motion.
Sent 2: The deeper you go into toward the Earths core, the hotter it gets.
Sent 3: At the core it is really hot.
Sent 4: All that heat tries to rise toward the surface.
Sent 5: In the Mantle, the rock is partially melted and is able to move.
Sent 6: As it is heated, the material in the mantle moves toward the surface.
Sent 7: As the mantle material rises, it cools.
Sent 8: When it reaches the Earths crust, it is mostly stopped.
Sent 9: A little of the material can break through the surface, but not all.
Sent 10: Instead, it begins to move horizontally.
Sent 11: The mantle material moves horizontally away from a mid-ocean ridge crest.
Sent 12: Toward the surface, the mantle material starts to cool.
Sent 13: As it cools it sinks back down into the mantle.
Sent 14: These areas are where deep sea trench occur.
Sent 15: The material sinks back down to the core.
Sent 16: The system operates like a giant conveyor belt.
Sent 17: The motion due to heating and cooling is called convection.
Question: Does rock move more at the surface of the earth or at its core?.

Ex Output:
At its core because it has more heat.

Ex 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: About what year, did Celtic tribes came looking for greener pastures in the areas that are now Franche-Comte, Alsace, and Burgundy?.

Ex Output:
2000 B.C.

Ex Input:
Paragraph- Sent 1: Fossils give clues about major geological events.
Sent 2: Fossils can also give clues about past climates.
Sent 3: Fossils of ocean animals on the top of a mountain?
Sent 4: Ocean animals have been found on the Earths tallest mountain.
Sent 5: Its hard to believe, but it is true.
Sent 6: These fossils were found at the top of Mt. Everest.
Sent 7: Mt. Everest is the highest mountain on Earth.
Sent 8: These fossils showed that this entire area was once at the bottom of a sea.
Sent 9: It can only mean that Mt. Everest was uplifted.
Sent 10: In fact, the entire Himalaya mountain range was raised.
Sent 11: It was forced up from the collision of two continents.
Sent 12: Fossils of plants are found in Antarctica.
Sent 13: Now, Antarctica is almost completely covered with ice.
Sent 14: Plants do not grow in Antarctica.
Sent 15: According to fossils, they once did.
Sent 16: This means that Antarctica was once much warmer than it is now.
Sent 17: These fossils tell us about Antarcticas past climate.
Question: Where is an unexpected location fossils have been found?.

Ex Output:
On top of Mount Everest.