You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

[Q]: There are at least 35 named glaciers in Glacier National Park (U.S.). In 1850, the area now comprising the national park had 150 glaciers. There are 25 active glaciers remaining in the park today. Since the ice ages stopped 10,000 years ago, there have been many slight climate shifts causing periods of glacier growth or melt-back. The glaciers are currently being studied to see the effect of global warming It is estimated that if current warming trends continue, there will be no glaciers left in the park by 2030.
[A]: is there a glacier in glacier national park?


[Q]: The high-resolution, digital cinema grade video projector alternately projects right-eye frames and left-eye frames, switching between them 144 times per second. The projector is either a Texas Instruments Digital Light Processing device or Sony's reflective LCOS (liquid crystal on silicon). A push-pull electro-optical liquid crystal modulator called a ZScreen is placed immediately in front of the projector lens to alternately polarize each frame. It circularly polarizes the frames clockwise for the right eye and counter-clockwise for the left eye. The audience wears circularly polarized glasses that have oppositely polarized lenses that ensures each eye sees only its designated frame. In RealD Cinema, each frame is projected three times to reduce flicker, a system called triple flash. The source video is usually produced at 24 frames per second per eye (total 48 frames/s), which may result in subtle ghosting and stuttering on horizontal camera movements. A silver screen is used to maintain the light polarization upon reflection and to reduce reflection loss to counter some of the significant light loss due to polarization filter absorption. The result is a 3D picture that seems to extend behind and in front of the screen itself.
[A]: do you have to wear glasses for reald 3d?


[Q]: Kentucky, being a border state, was among the chief places where the ``Brother against brother'' scenario was prevalent. Kentucky officially declared its neutrality at the beginning of the war, but after a failed attempt by Confederate General Leonidas Polk to take the state of Kentucky for the Confederacy, the legislature petitioned the Union Army for assistance. After early 1862 Kentucky came largely under Union control.
[A]:
was kentucky part of the union in the civil war?