This property associates an instance of E89 Propositional Object with a structural part of it that is by itself an instance of E89 Propositional Object.
Examples:
Dante’s “Divine Comedy” (E89) has component Dante’s “Hell” (E89)
The Venetians in Athens and the Destruction of the Parthenon in 1687,·Theodor E. Mommsen, American Journal of Archaeology, Vol. 45, No. 4 (Oct. - Dec., 1941), pp. 544-5 ↑