Input: Article: Kathmandu is located in the northwestern part of the Kathmandu Valley to the north of the Bagmati River and covers an area of 50.67 km2 (19.56 sq mi). The average elevation is 1,400 metres (4,600 ft) above sea level. The city is directly bounded by several other municipalities of the Kathmandu valley: south of the Bagmati by Lalitpur Sub-Metropolitan City (Patan) with which it today forms one urban area surrounded by a ring road, to the southwest by Kirtipur Municipality and to the east by Madyapur Thimi Municipality. To the north the urban area extends into several Village Development Committees. However, the urban agglomeration extends well beyond the neighboring municipalities, e. g. to Bhaktapur and just about covers the entire Kathmandu valley.

Now answer this question: About how many feet above sea level is Kathmandu?

Output: 4,600

Input: Article: The portable or table lamp is probably the most common fixture, found in many homes and offices. The standard lamp and shade that sits on a table is general lighting, while the desk lamp is considered task lighting. Magnifier lamps are also task lighting.

Now answer this question: What is one type of fixture commonly found in offices?

Output: table lamp

Input: Article: Google does not provide detailed figures for YouTube's running costs, and YouTube's revenues in 2007 were noted as "not material" in a regulatory filing. In June 2008, a Forbes magazine article projected the 2008 revenue at $200 million, noting progress in advertising sales. In January 2012, it was estimated that visitors to YouTube spent an average of 15 minutes a day on the site, in contrast to the four or five hours a day spent by a typical U.S. citizen watching television. In 2012, YouTube's revenue from its ads program was estimated at 3.7 billion. In 2013 it nearly doubled and estimated to hit 5.6 billion dollars according to eMarketer, others estimated 4.7 billion,

Now answer this question: What was youtube's estimated ads revenue in 2013?

Output:
3.7 billion