UCR issue 26

Hello,

This is a thread for trying to resolve UCR issue 26
<https://www.w3.org/2015/spatial/track/issues/26>. Again, the issue deals
with clarification of a requirement. In this case it is about the OWL Time
requirement Temporal vagueness
<http://w3c.github.io/sdw/UseCases/SDWUseCasesAndRequirements.html#TemporalVagueness>
.

Current phrasing is: *"It should be possible to describe time points and
intervals in a vague, imprecise manner. For instance, to represent an event
happened on the afternoon of June 1st or at the second quarter of the 9th
century."*

The examples seem to be neither vague nor imprecise. Could other examples
be supplied, or could be explained why the examples are vague and/or
imprecise?

Especially the time specialists among us: please help in getting this
requirement in shape.

Greetings,
Frans