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

[EX Q]: How many things may mirror things with effects?, Context: The three marks of existence may reflect Upanishadic or other influences. K.R. Norman supposes that the these terms were already in use at the Buddha's time, and were familiair to his hearers.
[EX A]: three

[EX Q]: What did the principle of inertia do for general relativity?, Context: The concept of inertia can be further generalized to explain the tendency of objects to continue in many different forms of constant motion, even those that are not strictly constant velocity. The rotational inertia of planet Earth is what fixes the constancy of the length of a day and the length of a year. Albert Einstein extended the principle of inertia further when he explained that reference frames subject to constant acceleration, such as those free-falling toward a gravitating object, were physically equivalent to inertial reference frames. This is why, for example, astronauts experience weightlessness when in free-fall orbit around the Earth, and why Newton's Laws of Motion are more easily discernible in such environments. If an astronaut places an object with mass in mid-air next to himself, it will remain stationary with respect to the astronaut due to its inertia. This is the same thing that would occur if the astronaut and the object were in intergalactic space with no net force of gravity acting on their shared reference frame. This principle of equivalence was one of the foundational underpinnings for the development of the general theory of relativity.
[EX A]: one of the foundational underpinnings

[EX Q]: Who was Kerry accused of making fun of?, Context: Kerry said that he had intended the remark as a jab at President Bush, and described the remarks as a "botched joke", having inadvertently left out the key word "us" (which would have been, "If you don't, you get us stuck in Iraq"), as well as leaving the phrase "just ask President Bush" off of the end of the sentence. In Kerry's prepared remarks, which he released during the ensuing media frenzy, the corresponding line was "... you end up getting us stuck in a war in Iraq. Just ask President Bush." He also said that from the context of the speech which, prior to the "stuck in Iraq" line, made several specific references to Bush and elements of his biography, that Kerry was referring to President Bush and not American troops in general.
[EX A]:
American troops