  In the model of quantum gravity proposed in JHEP 2020, 70 (2020), dynamical
spacetime arises as a collective phenomenon of underlying quantum matter.
Without a preferred decomposition of the Hilbert space, the signature, topology
and geometry of an emergent spacetime depend upon how the total Hilbert space
is partitioned into local Hilbert spaces. In this paper, it is shown that the
massless graviton emerges in the spacetime realized from a Hilbert space
decomposition that supports a collection of largely unentangled local clocks.
