Dear All,

I was pointed to the fact that E92 Spacetime Volume lacks a containment 
property.

The property E4 Period P10 falls within E4 Period is described as:

"This property associates an instance of E4 Period with another
instance of E4 Period that falls within the spacetime volumes occupied by the 
latter." lala

Since E4 Period in CRM v6.0 IsA E92 Spacetime Volume, P10 should be property of 
E92, and no more
of E4. Then, it will also be a property of E18, meaning that within some 
object, for some time, there
was something else, for instance, a golden bracelet in a treasury box. Sounds 
quite intuitive.
It may also be, that inside a thing something happened, such as Lord Nelson 
dying in a room
on HMS Victory. Finally, it may mean that within some Period, some object or 
person existed,
which is equally correct. Summarizing, not only gives this generalization 
credit to the fact that
P10 does not describe a causal or part-of relation, but the mixing of periods 
containing things
and vice-versa appears to be quite intuitive.

Best,

Martin

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