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NOTE A subtype of [relationship] is transitive if when A is related to B, and B is related to C in the same way, then A is necessarily related to C in that way. [specialization] and [composition] are examples of transitive subtypes of [relationship]. However, because [classification] is not transitive does not mean that A cannot be related to C in the same way, only that it does not necessarily follow from A being related to B and B being related to C.
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