Darwin's four year expedition, exploring South America, Galapagos islands, Pacific islands, etc lead to his Theory of Evolution.
(Darwin's four year expedition; lead; to his Theory of Evolution) Context(Darwin 's four year expedition lead,List([0, 100))):(Darwin's four year expedition; lead to his Theory of Evolution exploring; South America)
Darwin 's four year expedition lead,List([0, 100))
Darwin's four year expedition Darwin's four year expedition
lead lead to his Theory of Evolution exploring
to his Theory of Evolution
South America