Assertion: white cedar | /r/HasProperty | interspersed with balsam fir
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Source sentences:
text: Northern white cedar is dominant (up to 95% cover), often forming a fairly uniform stand, but may be interspersed with various amounts of red maple (up to 25% cover ), black spruce (up to 40% cover), or, less frequently, larch, yellow birch or balsam fir.