| http://www.w3.org/ns/prov#value | - Specifically, in some embodiments, one or more of the steps of a given VFM may themselves be modeled as VFMs. The resulting complex VFM may be referred to as a nested VFM. Additionally, multiple VFMs may be sequenced or chained together to model a series of operations, such as operations that may be performed by different agents 200.
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