input: Cartilage is a resilient and smooth elastic tissue, rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. It is not as hard and rigid as bone, but it is much stiffer and much less flexible than muscle.

Because of its rigidity, cartilage often serves the purpose of holding tubes open in the body. Examples include the rings of the trachea, such as the cricoid cartilage and carina.

Cartilage is composed of specialized cells called chondrocytes that produce a large amount of collagenous extracellular matrix, abundant ground substance that is rich in proteoglycan and elastin fibers. Cartilage is classified in three types, "elastic cartilage", "hyaline cartilage" and "fibrocartilage", which differ in relative amounts of collagen and proteoglycan.

Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural). Nutrition is supplied to the chondrocytes by diffusion. The compression of the articular cartilage or flexion of the elastic cartilage generates fluid flow, which assists diffusion of nutrients to the chondrocytes. Compared to other connective tissues, cartilage has a very slow turnover of its extracellular matrix and does not repair. In embryogenesis, the skeletal system is derived from the mesoderm germ layer. Chondrification (also known as chondrogenesis) is the process by which cartilage is formed from condensed mesenchyme tissue, which differentiates into chondroblasts and begins secreting the molecules (aggrecan and collagen type II) that form the extracellular matrix. 1. What substance can cartilage be compared to?
2. Is it flexible or rigid?
3. Where is cartilage located in the body?
4. Anywhere else?
5. What is cartilage like compared to muscle?
6. What kinds of cells is cartilage made up of?
7. What are they called?
8. What do they produce?
9. How many types of cartilage are there?
10. How do they differ?
11. How do cartilage cells get nutrition?
12. How often does cartilage repair itself?
13. Does cartilage have blood vessels? Return numbered answers in your output.

output: 1. other connective tissues
2. flexibl
3. , the ear,
4. the rib cage
5. stiffer
6. specialized cells
7. chondrocytes
8. matrix
9. three
10. in relative amounts of collagen and proteoglycan
11. diffusion
12. never
13. no

input: Raleigh (/rli/; RAH-lee) is the capital of the state of North Carolina as well as the seat of Wake County in the United States. It is the second most populous city in North Carolina, after Charlotte. Raleigh is known as the "City of Oaks" for its many oak trees, which line the streets in the heart of the city. The city covers a land area of 142.8 square miles (370 km2). The U.S. Census Bureau estimated the city's population to be 439,896 as of July 1, 2014. It is also one of the fastest-growing cities in the country. The city of Raleigh is named after Sir Walter Raleigh, who established the lost Roanoke Colony in present-day Dare County.

Raleigh is home to North Carolina State University and is part of the Research Triangle area, together with Durham (home of Duke University) and Chapel Hill (home of the University of North Carolina at Chapel Hill). The "Triangle" nickname originated after the 1959 creation of the Research Triangle Park, located in Durham & Wake Counties partway between the three cities and their universities. The Research Triangle region encompasses the U.S. Census Bureau's Raleigh-Durham-Chapel Hill Combined Statistical Area (CSA), which had an estimated population of 2,037,430 in 2013. The Raleigh Metropolitan Statistical Area (MSA) had an estimated population of 1,214,516 in 2013. 1. what is Raliegh home to?
2. what makes it a triangle?
3. when did this nickname start
4. is it growing slowly?
5. what is another nickname?
6. why?
7. who is the city named for?
8. what did Sir Walter Raleigh do?
9. is the city named for him?
10. what county is it in? Return numbered answers in your output.

output: 1. home to North Carolina State University
2. combination of three cities and their universities
3. it gets it after the creation of the Research Triangle Park
4. Not slow. It has an estimated population of 2,037,430 in 2013
5. it called "City of Oaks"
6. Because have many oak trees
7. unknown
8. he created the lost Roanoke Colony
9. Yes named after Sir Walter Raleigh
10. Wake County

input: "Mohawk Guy," a Mars rover flight director, isn't just a social media sensation -- he made an impression on President Barack Obama, too.

"I, in the past, thought about getting a mohawk myself, but my team keeps on discouraging me," Obama told scientists at NASA's Jet Propulsion Laboratory in a phone call Monday broadcast on NASA TV.

"And now that he's received marriage proposals and thousands of new Twitter followers, I think that I'm going to go back to my team and see if it makes sense," he said to the sound of laughter from dozens of NASA employees.

Obama called NASA mission specialists to congratulate them on the successful landing of the rover Curiosity, which reached Mars one week ago. He praised them for their achievements in the phone call, which was both laudatory and lighthearted.

"Mohawk Guy," whose real name is Bobak Ferdowsi, has become famous for his look during the rover landing last week. As the world waited for Curiosity to touch down, Ferdowsi sported a red-and-black mohawk; the sides of his head featured yellow dyed stars.

Decoding the workplace dress code

"It does sound like NASA has come a long way from the white-shirt, black dark-rimmed glasses and the pocket protectors," Obama told Jet Propulsion Laboratory Director Charles Elachi and colleagues. "You guys are a little cooler than you used to be."

More seriously, Obama thanked the scientists for devoting their lives to the cause of exploration outside our planet.

"What you've accomplished embodies the American spirit," he said. "Our expectation is that Curiosity is going to be telling us things that we did not know before," he said, and that the rover will lay the groundwork for an even more "audacious undertaking," which would be "a human mission to the red planet." 1. What is his nickname?
2. Who has he impressed?
3. What impressed him?
4. What was it?
5. Where does he work?
6. What is his name?
7. What were they watching?
8. What was it called?
9. Where did it go?
10. What is it's name
11. What did they used to wear?
12. Who did the president tell this to?
13. Who is he? Return numbered answers in your output.

output:
1. Mohawk Guy,
2. President Barack Obama
3. his look during the rover landing
4. a red-and-black mohawk; the sides of his head featured yellow dyed stars.
5. NASA
6. Bobak Ferdowsi
7. the rover landing
8. Curiosity
9. the red planet."
10. Mars
11. white-shirt, black dark-rimmed glasses and the pocket protectors
12. Charles Elachi
13. Jet Propulsion Laboratory Director