Replace tern:samplingType and tern:observationType with sdo:additionalType

[ashleysommer]

Remove tern:samplingType and tern:observationType, replace with sdo:additionalType

Resolves #223

[ashleysommer]

Note, this PR does not yet remove dcterms:type from Sampling and Observation in the ontology, that is still used by some data producers, and requires more discussion on the issue thread #223

[ashleysommer]

Should this change include methodType too?

[junrongYu]

Should this change include methodType too?

Hi Ashley, using sdo:additionalType for the Procedure to link to the method type can be appropriate, but it might not be the most semantically precise approach. The additionalType property is intended to add more specific types or classifications to an entity. For linking specific methods including equipment used, instruments, and additional guidelines, methodType is more precise and semantically meaningful. Example of method: https://linkeddata.tern.org.au/prez/dawe-cv/v/collection/nrm:f46fcbc6-0660-4e12-bcd4-c5642459b630

[ashleysommer]

@junrongYu
Yes, you're right. I can see how tern:methodType is used differently than tern:samplingType and tern:observationType.