Does the sentence "On this grand occasion, all the state rooms are in use, as the royal family proceed through them, beginning at the great north doors of the Picture Gallery." provide a valid answer to the question "When are state banquets held?"

A: no

Does the sentence "In October 1810, six months after Fryderyk's birth, the family moved to Warsaw, where his father acquired a post teaching French at the Warsaw Lyceum, then housed in the Saxon Palace." provide a valid answer to the question "What two instruments did Frederic's father play during this time?"

A: no

Does the sentence "Reforms of the voting system increased the power of the House of Commons at the expense of the House of Lords and the monarch." provide a valid answer to the question "How did the reforms of Britains voting system affect the House of Commons?"

A: yes

Does the sentence "In 2012, a new bone marrow donor program was launched by the University of Nigeria to help people with leukaemia, lymphoma, or sickle cell disease to find a compatible donor for a life-saving bone marrow transplant, which cures them of their conditions." provide a valid answer to the question "When did Nigeria launch a bone marrow donation program?"

A:
yes