Does the sentence "Laird writes that the Ming appointed titles to eastern Tibetan princes, and that "these alliances with eastern Tibetan principalities are the evidence China now produces for its assertion that the Ming ruled Tibet," despite the fact that the Ming did not send an army to replace the Mongols after they left Tibet." provide a valid answer to the question "What didn't the Ming send to replace the Mongols when they left Tibet?"

A: yes

Does the sentence "Michael Greenberger specifically named the Atlanta-based IntercontinentalExchange, founded by Goldman Sachs, Morgan Stanley and BP as playing a key role in speculative run-up of oil futures prices traded off the regulated futures exchanges in London and New York." provide a valid answer to the question "Who founded the Atlanta-based Intercontinental Exchange?"

A: yes

Does the sentence "When he approached retirement age, he personally recommended his successor." provide a valid answer to the question "What did Jack Brickhouse do when he approached his retirement age?"

A: yes

Does the sentence "Andrew Cole and Alan Shearer hold the record for most goals in a season (34) for Newcastle and Blackburn respectively." provide a valid answer to the question "Who has the record for scoring the most goals in single season?"

A:
yes