Re: Email Message Definition?

On 5/16/14 2:50 PM, Dan Scott wrote:
> On Fri, May 16, 2014 at 02:32:05PM -0400, Kingsley Idehen wrote:
>> On 5/16/14 1:27 PM, Dan Brickley wrote:
>>> On 16 May 2014 17:59, Kingsley Idehen<kidehen@openlinksw.com>  wrote:
>>>>> All,
>>>>>
>>>>> Is this [1] the definition of an Email, or this just an error?
>>> "An email message."
>>>
>>> Short and sweet. Is there more that you think it should usefully say?
>>>
>>> At this stage we have not got into the business of representing mail
>>> headers, although that could turn out to be interesting.
>>>
>>> Dan
>>>
>>>
>> But I am not seeing a single recognizable Email Message attribute, 
>> hence my question. Another route to my confusion is by using a CTRL+F 
>> (or Command F) sequence to search on the pattern: Email, there are 
>> only two hits:
>>
>> Thing > CreativeWork > *Email*Message
>> An *email* message.
>>
>> The properties table doesn't have a single hit i.e., its basically 
>> describes a 'Creative Work' .
>>
>> Hoping this clarifies my concerns.
>
> This is a relatively common pattern in schema.org. The class name is used
> to distinguish the instance from the more generic class, but there are
> no special properties that are necessary beyond the parent class.
>
> Look at http://schema.org/docs/full.html and you can see there are many
> classes that do not define new properties.
>
>
I understand that.

I just don't understand the following, which might be clear if expressed 
in Turtle Notation:

## Turtle Start ##

<http://schema.org/EmailMessage#this> rdfs:subClassOf 
<http://schema.org/CreativeWork#this> .

## Turtle End ##

Basically, <http://schema.org/EmailMessage#that> doesn't have a single 
distinguishing attribute that forms the basis the rdfs:subClassOf 
relation above.

Alternatively, I could be safe to assume that the missing attribute is 
in the blurb above the properties table that reads:  "..An email 
message..." . Put differently, the comment "An email message." and the 
"EmailMessage" label are the distinguishing attributes of this 
subClassOf schema:CreativeWork. Represented in Turtle Notation it implies:

## Turtle Start ##

<http://schema.org/EmailMessage#this> rdfs:subClassOf 
<http://schema.org/CreativeWork#this> .
<http://schema.org/EmailMessage#this> a owl:Class .
<http://schema.org/EmailMessage#this> rdfs:label "EmailMessage" .
<http://schema.org/EmailMessage#this> rdfs:comment "An email message".

## Turtle End ##

If the above is accurate, could it be that it exists in RDFa embedded in 
this page? Or in the document <http://schema.org/docs/full.html> ?

-- 

Regards,

Kingsley Idehen	
Founder & CEO
OpenLink Software
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