In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[Q]: What is needed to prove the theory?, Context: In the early 11th century, the Muslim physicist Ibn al-Haytham (Alhacen or Alhazen) discussed space perception and its epistemological implications in his Book of Optics (1021), he also rejected Aristotle's definition of topos (Physics IV) by way of geometric demonstrations and defined place as a mathematical spatial extension. His experimental proof of the intromission model of vision led to changes in the understanding of the visual perception of space, contrary to the previous emission theory of vision supported by Euclid and Ptolemy. In "tying the visual perception of space to prior bodily experience, Alhacen unequivocally rejected the intuitiveness of spatial perception and, therefore, the autonomy of vision. Without tangible notions of distance and size for correlation, sight can tell us next to nothing about such things."
[A]: vision


[Q]: Although we think of Arabic languages as being Middle Eastern, what are they often referred to as in studies?, Context: A large percentage of experts on the modern Middle East began their training in university departments named for the Near East. Similarly the journals associated with these fields of expertise include the words Near East or Near Eastern. The meaning of Near East in these numerous establishments and publications is Middle East. Expertise on the modern Middle East is almost never mixed or confused with studies of the Ancient Near East, although often "Ancient Near East" is abbreviated to "Near East" without any implication of modern times. For example, "Near Eastern Languages" in the ancient sense includes such languages as Sumerian and Akkadian. In the modern sense, it is likely to mean any or all of the Arabic languages.
[A]: Near Eastern Languages


[Q]: What was not ruled by law and free from interference?, Context: There were tax exemptions for religious figures and, to some extent, teachers and doctors. The Mongol Empire practiced religious tolerance because Mongol tradition had long held that religion was a personal concept, and not subject to law or interference.[citation needed] Sometime before the rise of Genghis Khan, Ong Khan, his mentor and eventual rival, had converted to Nestorian Christianity. Various Mongol tribes were Shamanist, Buddhist or Christian. Religious tolerance was thus a well established concept on the Asian steppe.
[A]:
religion