le, the axioms for 'part' in the merged ontology. These 
axioms can be thought of as applying to 'solid everyday things' in 
the 3-d sense, which would be continuants in an endurantist ontology; 
or they can be thought of as applying to pieces of 3-d space (what 
might be termed merological locations); or they can be applied to 4-d 
histories; or they can be applied to occurrents in an endurantist 
ontology, but not at the same time as to occurrents, because they 
would use a different notion of 'part' (epi