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.
One example: Paragraph- Sent 1: Obama was born on August 4, 1961, at Kapiʻolani Maternity & Gynecological Hospital in Honolulu, Hawaii.
Sent 2: He is the only President to have been born in Hawaii.
Sent 3: He was born to a white mother and a black father.
Sent 4: His mother, Ann Dunham (1942-1995), was born in Wichita, Kansas, of mostly English descent, with some German, Irish, Scottish, Swiss, and Welsh ancestry. Question: How old was Obama's mother when he was born?
Solution is here: 19.
Explanation: Obama was born in 1961. His mother was born in 1942 and 1961-1942=19. Therefore, any of the following responses are considred correct: '19' and 'almost twenty'.

Now, solve this: Paragraph- Sent 1: What if you could drain all of Earths oceans?
Sent 2: What would it look like?
Sent 3: You might be really surprised.
Sent 4: You see that the surface has two main features.
Sent 5: It has continents and ocean basins.
Sent 6: Continents are large land areas.
Sent 7: These are the areas that are mostly above sea level.
Sent 8: Ocean basins extend from the edges of continents.
Sent 9: They include the ocean floor and Earths deep ocean trenches.
Sent 10: You will also notice the ocean floor is not flat.
Sent 11: It too has many Continents are much older than ocean basins.
Sent 12: Some rocks on the continents are billions of years old.
Sent 13: Ocean basins may only be millions of years old.
Sent 14: Because the continents are so old, a lot has happened to them!
Sent 15: As we view the land around us, we see landforms.
Sent 16: Landforms are physical features on Earths surface.
Sent 17: These features change over time, but how?
Sent 18: There are actually two types of forces at work. 
Question: What are the ages of ocean basins and continents?.
Solution:
Continents have rocks that are billions of years old; ocean basins may only be millions of years old.