Full Idea
Those who believe that the statue is distinct from the lump should concede that whatever shares a part with the statue shares a part with the lump but deny that the statue is a part of the lump.
Gist of Idea
The statue and lump seem to share parts, but the statue is not part of the lump
Source
Peter van Inwagen (Material Beings [1990], 05)
Book Reference
Inwagen,Peter van: 'Material Beings' [Cornell 1995], p.53
A Reaction
Standard mereology says if they share all their parts then they are the same thing, so it is hard to explain how they are 'distinct'. The distinction is only modal - that they could be separated (by squashing, or by part substitution).