[Q]: Sentence: Furthermore, predation keeps hydrological features such as creeks and streams in normal working order. Question: Broader ecological impacts can occur when an apex predator is removed, in the case of Yellowstone, this includes alteration to the? OPTIONS:
- yes
- no
++++++++++
[A]: yes

[Q]: Sentence: But in spite of these difficulties, the Empire remained a major expansionist power until the Battle of Vienna in 1683, which marked the end of Ottoman expansion into Europe. Question: What battle took place in 1683? OPTIONS:
- yes
- no
++++++++++
[A]: yes

[Q]: Sentence: To help celebrate his life, his wife asked guests not to wear black (the traditional funeral color) while attending his service, during which soloist Jean MacDonald sang a verse of Robert Louis Stevenson's "Requiem": Question: What color silk was used in Bell's coffin? OPTIONS:
- yes
- no
++++++++++
[A]:
no