Re: [web-annotation] Rename `role` to `motive`

I am fine with 'purpose'

I.

> On 24 Nov 2015, at 04:55, Benjamin Young <bigbluehat@hypothes.is> wrote:
> 
> The term `purpose` has grown on me. :smiley:
> 
> Annotation
> - hasMotivation bookmarking
> - hasBody (which) hasPurpose tagging
> 
> That reads OK. And possibly more clearly (to some at least) than the same set of (pseudo) statements made with `hasRole`.
> 
> Or...less pseudo:
> 
> ```
> {
>   "motivation": " bookmarking",
>   "body": {
>     "purpose": "tagging",
>     "text": "W3C Spec"
>   }
> }
> ```
> 
> :+1: for `purpose` if we want to spend the time here, but let's not spend too much more...k? :smiley: Bigger fish and all that. :wink:
> 


----
Ivan Herman, W3C
Digital Publishing Lead
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ORCID ID: http://orcid.org/0000-0003-0782-2704