Does the sentence "It is in this time that the notation of music on a staff and other elements of musical notation began to take shape." provide a valid answer to the question "What can a musical scored be performed without?"

A: no

Does the sentence "Holders of the rank immediately below, that of ordinary marquess, received a pension, but had no territorial rule." provide a valid answer to the question "During what period was it obvious that corruption was widespread in the government?"

A: no

Does the sentence "He also modified a melodeon (a type of pump organ) so that it could transmit its music electrically over a distance." provide a valid answer to the question "What is a melodeon a kind of?"

A: yes

Does the sentence "Except for three patents, the US patents administered by Sisvel had all expired in 2015, however (the exceptions are:" provide a valid answer to the question "When did the majority of the patents held by Sisvel expire?"

A:
yes