Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

[EX Q]: Context: From the outside, the skin looks plain and simple, as you can see in Figure 16.5. But at a cellular level, theres nothing plain or simple about it. A single square inch of skin contains about 20 blood vessels, hundreds of sweat glands, and more than a thousand nerve endings. It also contains tens of thousands of pigment-producing cells. Clearly, there is much more to skin than meets the eye! For a dramatic introduction to the skin, watch this video: MEDIA Click image to the left or use the URL below. URL: The skin is only about 2 mm thick, or about as thick as the cover of a book. Although it is very thin, it consists of two distinct layers, called the epidermis and the dermis. You can see both layers and some of their structures in Figure 16.6. Refer to the figure as you read about the epidermis and dermis below. The epidermis is the outer layer of skin. It consists almost entirely of epithelial cells. There are no blood vessels, nerve endings, or glands in this skin layer. Nonetheless, this layer of skin is very active. It is constantly being renewed. How does this happen? 1. The cells at the bottom of the epidermis are always dividing by mitosis to form new cells. 2. The new cells gradually move up through the epidermis toward the surface of the body. As they move, they produce the tough, fibrous protein called keratin. 3. By the time the cells reach the surface, they have filled with keratin and died. On the surface, the dead cells form a protective, waterproof layer. 4. Dead cells are gradually shed from the surface of the epidermis. As they are shed, they are replaced by other dead cells that move up from below. The epidermis also contains cells called melanocytes. You can see a melanocyte in Figure 16.7. Melanocytes produce melanin. Melanin is a brown pigment that gives skin much of its color. Everyones skin has about the same number of melanocytes per square inch. However, the melanocytes of people with darker skin produce more melanin. The amount of melanin that is produced depends partly on your genes and partly on how much ultraviolet light strikes your skin. The more light you get, the more melanin your melanocytes produce. This explains why skin tans when its exposed to sunlight. The dermis is the inner layer of skin. It is made of tough connective tissue. The dermis is attached to the epidermis by fibers made of the protein collagen. The dermis is where most skin structures are located. Look again at Figure pain, pressure, and temperature. If you cut your skin and it bleeds, the cut has penetrated the dermis and damaged a blood vessel. The cut probably hurts as well because of the nerve endings in this skin layer. The dermis also contains hair follicles and two types of glands. You can see some of these structures in Figure 16.8. Hair follicles are structures where hairs originate. Each hair grows out of a follicle, passes up through the epidermis, and extends above the skin surface. Sebaceous glands are commonly called oil glands. They produce an oily substance called sebum. Sebum is secreted into hair follicles. Then it makes its way along the hair shaft to the surface of the skin. Sebum waterproofs the hair and skin and helps prevent them from drying out. Sweat glands produce the salty fluid known as sweat. Sweat contains excess water, salts, and other waste products. Each sweat gland has a duct that passes through the epidermis. Sweat travels from the gland through the duct and out through a pore on the surface of the skin. You couldnt survive without your skin. It has many important functions. In several ways, it helps maintain homeostasis. The main function of the skin is controlling what enters and leaves the body. It prevents the loss of too much water from the body. It also prevents bacteria and other microorganisms from entering the body. Melanin in the epidermis absorbs ultraviolet light. This prevents the light from reaching and damaging the dermis. The skin helps maintain a constant body temperature. It 
 Question: __oily substance secreted by glands in the skin
[EX A]: sebum

[EX Q]: Context: After a win at Cleveland, the Steelers traveled to Baltimore to take on the Ravens in what would be the Thanksgiving Primetime Game and of course their first game on Thanksgiving Day since 1998. The Ravens drew first blood as Joe Flacco found Torrey Smith on a 7-yard pass to make the score 7-0 in the first quarter. In then 2nd quarter, Justin Tucker nailed a 43-yard field goal for a 10-0 halftime lead. After the break, the Ravens went back to work in the 3rd quarter as Tucker nailed a 34-yard field goal for a 13-0 lead. The Steelers finally got on the board asBen Roethlisberger found Emmanuel Sanders on an 8-yard touchdown pass for a 13-7 score. The Ravens then pulled away as Tucker kicked yet another field goal putting his team ahead by 9, 16-7. In the 4th quarter, Tucker kicked yet another field goal this one from 45 yards out for a score of 19-7. The Steelers managed to draw within 5 points 19-14 when Le'Veon Bell ran for a 1-yard touchdown. Tucker then kicked a 48-yard field goal to make the score 22-14. The Steelers started their comeback attempt as Roethlisberger found Jerricho Cotchery on a 1-yard touchdown pass for a 22-20 score. After this, they tried the 2-point conversion to tie the game and send it into OT, but they would come up short and miss the conversion with 1:03 left in the game. This dropped the team to 5-7 and 3rd place in the AFC North. Also they dropped to 2-5 on Thanksgiving. 
 Question: Which team went scoreless in the first quarter?
[EX A]: steelers

[EX Q]: Context: Menua (Armenian: ) was the fifth known king of Urartu from c. 810 BC to approximately 786 BC. A younger son of the preceding Urartuan King, Ishpuini, Menua was adopted as co-ruler by his father in the last years of his reign. 
 Question: What noble title does Menua hold?
[EX A]:
king of urartu