Problem: Text: Blue Cross Blue Shield Association (BCBSA) is a federation of 36 separate United States health insurance organizations and companies, providing health insurance in the United States to more than 106 million people. Blue Cross was founded in 1929 and became the Blue Cross Association in 1960, while Blue Shield emerged in 1939 and the Blue Shield Association was created in 1948. The two organizations merged in 1982.

Question: is blue cross the same as blue shield?
A: yes

Problem: Text: Pennsylvania is the 33rd-largest state by area, and the 6th-most populous state according to the last official U.S. Census count in 2010. It is the 9th-most densely populated of the 50 states. Pennsylvania's two most populous cities are Philadelphia (1,567,872), and Pittsburgh (303,625). The state capital and its 10th largest city is Harrisburg. Pennsylvania has 140 miles (225 km) of waterfront along Lake Erie and the Delaware Estuary.

Question: is philadelphia and pittsburgh in the same state?
A: yes

Problem: Text: 47th--50th Streets--Rockefeller Center is an express station on the IND Sixth Avenue Line of the New York City Subway. It is located along Sixth Avenue (Avenue of the Americas) between 47th and 50th Streets, on the west side of Rockefeller Center. The station is served by the D and F trains at all times, and the B and M trains on weekdays.

Question: does the r train go to rockefeller center?
A:
no