[Q]: Sentence: Many of these regions coincided to a large extent with the borders of the Byzantine Empire of the late 11th century and the Eastern Mediterranean areas of ancient Greek colonization. Question: Which two seas have been most central to Greek history?
++++++++++
[A]: no

[Q]: Sentence: Classical physics cannot explain this fact. Question: How is the proportional nature of the Planck constant explained?
++++++++++
[A]: yes

[Q]: Sentence: Many hunter-gatherers consciously manipulate the landscape through cutting or burning undesirable plants while encouraging desirable ones, some even going to the extent of slash-and-burn to create habitat for game animals. Question: What do hunter-gathers intentionally manipulate?
++++++++++
[A]:
yes