  We provide here a philosophical basis for [arXiv:2012.03994,
arXiv:2107.06693] based on the notion of spacetime relationalism. We argue that
the view which is more cleanly compatible with GR is that in which the
spacetime manifold is a relational (or 'emergent') property of the aggregate or
physical sum of gravitational field portions, field that is considered material
and for which spacetime geometry (in the sense of the metric properties) is one
of its material properties. All of the previous philosophical notions are
defined in relation to a clear ontology of material individuals, briefly
described in the appendix. Furthermore, this fits well with the phase space of
GR, thing that also may inform how to proceed in the quantum realm.
