Problem: Does "Extensive measures must be employed to extract the metal from its ore." answer the question "Along with underground, open pit and in-situ leaching, what sort of mining is used to mine uranium?"

A: no

Problem: Does "Present-day Slavic people are classified into West Slavic (chiefly Poles, Czechs and Slovaks), East Slavic (chiefly Russians, Belarusians, and Ukrainians), and South Slavic (chiefly Serbs, Bulgarians, Croats, Bosniaks, Macedonians, Slovenes, and Montenegrins), though sometimes the West Slavs and East Slavs are combined into a single group known as North Slavs." answer the question "East Slavic people consist of which nationalities?"

A: yes

Problem: Does "All Mainland Chinese television stations (along with some stations in Hong Kong and expatriate communities) cancelled all regularly-scheduled programming, displayed their logo in grayscale, and replaced their cancelled programmes with live earthquake footage from CCTV-1 for multiple days after the quake." answer the question "What about pay TV channels?"

A:
no