kill holes (condition)

Statements in which the resource exists as a object.
Subject	Predicate
aat_rev:5005776878, aat_rev:5005776886, aat_rev:5005776823, aat_rev:5005776824, aat_rev:5005776880, aat_rev:5005776881, aat_rev:5005776883, aat_rev:5005776884, aat_rev:5005776885, aat_rev:5005776887	prov:used