Does the sentence "In the West it was known as the feast of the Conception (passive) of Mary, and was associated particularly with the Normans, whether these introduced it directly from the East or took it from English usage." provide a valid answer to the question "What was widely observed in the eastern portion of the Byzantine world ?"

A: no

Does the sentence "For example, diseases involving fewer than 200,000 patients in the United States, or larger populations in certain circumstances are subject to the Orphan Drug Act." provide a valid answer to the question "What is the length of time of market exclusivity of an orphan drug?"

A: no

Does the sentence "These arguments trade heavily on two principles central to his philosophy: the principle of sufficient reason and the identity of indiscernibles." provide a valid answer to the question "Which principles did Leibniz's arguments trade heavily upon?"

A: yes

Does the sentence "Sylvester Primer of the College of Charleston wrote about aspects of the local dialect in his late 19th-century works: "Charleston Provincialisms" (1887) and "The Huguenot Element in Charleston's Provincialisms", published in a German journal." provide a valid answer to the question "To which college did Sylvester Primer belong?"

A:
yes