[Q]: Sentence: Most artificial satellites operate in this region called low Earth orbit and must fire their engines every few days to maintain orbit.[citation needed] Question: why do satellites need to fire engines every few day to keep orbit? OPTIONS:
- yes
- no
++++++++++
[A]: no

[Q]: Sentence: The "visitation" was a section of the province through which visitors to each priory could describe the state of its religious life and its studies to the next chapter. Question: By what year was the school in Oxford completed? OPTIONS:
- yes
- no
++++++++++
[A]: no

[Q]: Sentence: Throughout the 1980s with the United States supported Contra War (or Contra-revolutionary war) which continued up until 1988, and the economic collapse of the country many more Nicaraguans migrated to the United States amongst other countries. Question: Why did the Nicaraguans come to America? OPTIONS:
- yes
- no
++++++++++
[A]:
no