This started off as a question about DC.coverage.placename, but
I realized it's really about whether one repeats elements with
single values, or can repeat values within an element.
I know this is jumping the gun somewhat ... but I figured
DC.coverage.placename (as free text) is probably fairly mature.
Given that Dublin Core elements may be repeated, and supposing I wish to
say that a document refers to Hull in the UK and not Hull, Quebec,
and assuming we defined language = English so don't have to worry
about Angleterre, etc., might one put (picking an example here of
somewhere that has what amount to aliases if one doesn't inquire too
closely)
<meta name="dc.coverage.placename" content="Hull, Yorkshire,
England, United Kingdom, Great Britain, UK">
or
<meta name="dc.coverage.placename" content="Hull">
<meta name="dc.coverage.placename" content="Yorkshire">
<meta name="dc.coverage.placename" content="England">
<meta name="dc.coverage.placename" content="United Kingdom">
<meta name="dc.coverage.placename" content="Great Britain">
or
<meta name="dc.coverage.placename" content="Hull">
<meta name="dc.coverage.placename" content="Yorkshire">
<meta name="dc.coverage.placename" content="England, United Kingdom,
Great Britain, UK">
and maybe
<meta name="dc.coverage.placename" scheme="ISO3166-A3" content="GBR">
(or <meta name="dc.coverage.placename" content="(scheme=ISO3166-A3) GBR">
)
or would people rather dive into a more complex structure like
dc.coverage.placename.city
dc.coverage.placename.county
dc.coverage.placename.state
dc.coverage.placename.postcode
bearing in mind that such entities as provinces, states, counties, post
codes etc. don't exist everywhere, let alone have the same names or
formats, so that for searching by someone who doesn't know the conventions
of the region involved things probably devolves to a free-text search
anyway.
Andrew Daviel
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