Problem: Does "As the only neutral atom for which the Schrodinger equation can be solved analytically, study of the energetics and bonding of the hydrogen atom has played a key role in the development of quantum mechanics." answer the question "What is the molecular make-up of hydrogen?"

A: no

Problem: Does "Some electric traction systems provide regenerative braking that turns the train's kinetic energy back into electricity and returns it to the supply system to be used by other trains or the general utility grid." answer the question "What do some electric traction systems provide?"

A: yes

Problem: Does "After The Great Boston Fire of 1872, workers used building rubble as landfill along the downtown waterfront." answer the question "What famous disaster happened in Boston in 1872?"

A:
yes