ROR ids do not seem to be included for grants
The following:
commonmeta sample --from crossref --number 10 --has-ror-id --type grant 2> /tmp/ror-examples.json
Returns correct results, but the actual ror ids are not in the commonmeta output.
FTR: grants are the third-largest type of Crossref work that includes ror-ids:
http://api.crossref.org/works?filter=has-ror-id:t,&facet=type-name:*