Does the sentence "Following the accident, a Fortune magazine contacted Larry McKinney, the executive director at the Harte Research Institute for Gulf of Mexico Studies at Texas A&M, and he explained that "A two-month delay in the Arctic is not a two-month delay ..." provide a valid answer to the question "Why was the Kulluk oil rig being towed to Washington?"

A: no

Does the sentence "In the 2005 National Family Health Survey, it was reported that the city's total fertility rate is 1.8,:47 which is below the replacement rate." provide a valid answer to the question "What was the fertility rate of Hyderabad according to a 2005 survey?"

A: yes

Does the sentence "Later, Leibniz (17th century) and most importantly Kant played central roles in the history of philosophy." provide a valid answer to the question "When was Leibniz an active philosopher?"

A: yes

Does the sentence "From an academic perspective, social enterprise is for the most part considered a sub-set of the nonprofit sector as typically they too are concerned with a purpose relating to a public good, however these are not bound to adhere to a nonprofit legal structure and many incorporate and operate as for-profit entities." provide a valid answer to the question "What is the biggest concern of non-profits in Australia?"

A:
yes