Assertion: southern live oak's canopy | /r/CapableOf | extend 40 to 60 feet
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Source sentences:
text: Quercus laurifolia, also known as laurel oak or diamond leaf oak, is a fast-growing, acorn-producing deciduous or semi-evergreen tree that may grow up to 60 feet tall, with a dense canopy that may extend out 40 to 60 feet.