Problem: Does "A joint GermanSoviet parade was held in Lvov and Brest-Litovsk, while the countries commanders met in the latter location." answer the question "Where did the Nazi and Russian leaders meet to discuss what to do with Poland?"

A: yes

Problem: Does "The medieval city is a foundation of the Zahringer ruling family, which rose to power in Upper Burgundy in the 12th century." answer the question "The medieval city is a foundation of what family?"

A: yes

Problem: Does "Bell had filed the mercury application at the patent office a year earlier on February 25, 1875, long before Elisha Gray described the water device." answer the question "When did Bell put in his prior patent?"

A:
yes