Problem: Does "In the United States, heating, ventilation and air conditioning (HVAC) systems account for 30% (4.65 EJ/yr) of the energy used in commercial buildings and nearly 50% (10.1 EJ/yr) of the energy used in residential buildings." answer the question "How much energy does an HVAC system use in commercial locations?" OPTIONS:
- yes
- no

A: yes

Problem: Does "This contrasted with earlier styles, which were primarily disseminated among craftsmen through the direct experience of the apprenticeship system." answer the question "How did styles disseminate before Georgian architecture?" OPTIONS:
- yes
- no

A: yes

Problem: Does "With no warfare since the early 17th century, samurai gradually lost their military function during the Tokugawa era (also called the Edo period)." answer the question "When had samurai last been used in battle?" OPTIONS:
- yes
- no

A:
yes