Does the sentence "UNICEF recognizes the "Middle East and North Africa" region, where the Middle East is bounded by the Red Sea on the west and includes Iran on the east." provide a valid answer to the question "Who recognizes the "Middle East and North Africa" region?"

A: yes

Does the sentence "Testament to San Diego's cycling efforts, in 2006, San Diego was rated as the best city for cycling for U.S. cities with a population over 1 million." provide a valid answer to the question "Why are average trip distances so lengthy in San Diego?"

A: no

Does the sentence "On 30 March 2013, North Korea stated that it had entered a "state of war" with South Korea and declared that "The long-standing situation of the Korean peninsula being neither at peace nor at war is finally over"." provide a valid answer to the question "Why is North Korea insisting that the 1953 armistice was violated?"

A: no

Does the sentence "The history of ecology in the 20th century is closely tied to that of environmentalism; the Gaia hypothesis, first formulated in the 1960s, and spreading in the 1970s, and more recently the scientific-religious movement of Deep Ecology have brought the two closer together." provide a valid answer to the question "When was the Gaia hypothesis discovered?"

A:
yes