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 Input:
Context: Comet ISON, formally known as C/2012 S1, was a sungrazing comet discovered on 21 September 2012 by Vitali Nevski ( , Vitebsk, Belarus) and Artyom Novichonok ( , Kondopoga, Russia). 
 Question: By whom was Comet ISON discovered?

Ex Output:
artyom novichonok


Ex Input:
Context: In week 12, the Lions flew east for another battle of division leaders, this time with the AFC East's 8-2 New England Patriots. The Lions failed to score a touchdown for the second consecutive week, and fell to second place after a blowout loss. The Lions scored first when Matt Prater hit a 48-yard field goal in the first quarter. The Patriots then took the lead which they kept for the rest of the game when Tim Wright caught a 4-yard touchdown pass from Tom Brady near the end of the first quarter. The Lions responded with a 20-yard field goal in the second quarter. The Patriots then scored two touchdowns on a 3-yard run from LeGarrette Blount, then an 8-yard catch by Tim Wright. New England's Stephen Gostkowski then kicked a 35-yard field goal to make the score 24-6 at halftime. The only score of the third quarter was a Patriots 35 yard field goal. In the final quarter, the Lions scored their third field goal, this one from 49 yards out. The Patriots capped their large victory with a 1-yard touchdown run from LeGarrette Blount. 
 Question: Who scored the only points of the third quarter?

Ex Output:
patriots


Ex Input:
Context: There are many kinds of sales. For example, a "back-to-school sale" is held near the beginning of the school year. Parents like the lower prices of the clothes and school supplies for their children. A "midnight madness" event starts very late at night. An "early bird special" sale starts very early in the morning. This kind of sale is popular the day after Thanksgiving in November. A favorite sale among many people is the "buy one, get one free" sale. You buy one thing and get a second one without cost. When people see the word "free" in an advertisement they know they are getting a good deal. As a matter of fact, it is not the case. Another kind of sale is a "going out of business" sale. This is when a storeowner tries to sell all the goods in the store before closing the business permanently . Let us say the store sells floor coverings. The owner lowers the prices and puts up a sign that says: "Going out of business sale. All items MUST be sold by tomorrow." People who buy the floor coverings think they are getting a special deal because everything must be sold in a short period of time. Then, days later they see the store did not close permanently. And they see the same sign that claims the store is going out of business. Some business owners really do not end the business. They just want to earn more money. People also hold their own sales. They hold garage sales and yard sales outside their home. They sell things they no longer want. Groups such as religious centers or schools hold bake sales. They sell cakes, cookies and other baked goods to raise money. In America, you can always find a good sale, no matter the day or time of year. There is the Independence Day sale, Veteran's Day sale, clearance sale, sidewalk sale, red tag sale, white sale, blue light special, liquidation sale, half-off sale, warehouse sale, tent sale ... 
 Question: What do we call the sale if it starts before the sun rises?

Ex Output:

an "early bird special" sale.