Can we specify the range of annotator?

[kluo9]

Hi,

I wrote a schema to extract the drug usage for some disease, and one attribute is to extract the frequency of each drug:

Freq: 
  is_a: NamedEntity
  id_prefixes: 
    - SNOMEDCT
  annotations:
    annotators: bioportal:SNOMEDCT

Then in the output I noticed that there are two types of annotation for 'once a day':

- id: SNOMEDCT:69620002
  label: daily

and

- id: SNOMEDCT:259032004
  label: per day

Searching the SNOMED CT ontology suggests these two annotations belong to two different classes, one is Intervals of days and the other is Denominators of time.

Is there a way to specify the range of annotator so that the same meaning is annotated in the the same class?

Besides of that, USCDI has predefined which version of vocabularies to be used, can we specify the exact version of ontology in the annotator as well?

Thanks!