As of the census of 2010, there were 47,723 people, 17,816 households, and 11,722 families residing in the city. The population density was 1,754.6/sq mi (677.5/km²).  There were 19,806 housing units at an average density of 749.9 per square mile (289.6/km²).  The racial makeup of the city was 38.32% White (U.S. Census), 57.25% African American (U.S. Census), 1.25% Native American (U.S. Census), 1.85% Asian, 0.14% Pacific Islander (U.S. Census), 1.03% from Race (United States Census), and 1.09% from two or more races.  6.98% of the population were Hispanics in the United States or Latino (U.S. Census) of any race.

How many more people are there than housing units?
A: 27917

Coming off their win over the Bills the Bears played on home ground for an NFC North rivalry match against the Vikings. In the first quarter the Bears trailed early after kicker Ryan Longwell hit a 36-yard field goal. They took the lead in the second quarter when QB Jay Cutler threw a 17-yard TD pass to TE Greg Olsen. They fell behind after QB Brett Favre completed a 53-yard TD pass to WR Percy Harvin. They got the lead back when Cutler got a 19-yard TD pass to WR Devin Hester. The Bears extended their lead in the third quarter after kicker Robbie Gould nailed a 34-yard field goal. The Vikings replied with Longwell making a 33-yard field goal, but the Bears continued to score with Gould hitting a 37-yard field goal, and in the 4th quarter with Cutler making a 19-yard TD pass to TE Kellen Davis.

What are the two shortest touchdown passes made?
A: 17-yard

Alluvial diamond and gold mining activities also account for some economic activity. In recent years , foreign investment from ArcelorMittal Steel, BHP Biliton, and China Union is aiding the revitalization of the iron-ore mining sector. Liberia has begun exploration for offshore oil; unproven oil reserves may be in excess of one billion barrels. The government divided its offshore waters into 17 blocks and began auctioning off exploration licenses for the blocks in 2004, with further auctions in 2007 and 2009. An additional 13 ultra-deep offshore blocks were demarcated in 2011 and planned for auction. Among the companies to have won licenses are Repsol, Chevron, Anadarko and Woodside Petroleum.

What happend with the additional 13 ultra-deep offshore blocks?
A:
were demarcated