Choose names to replace Activity/Entity/Agent in the BIDS-Prov skeleton

[cmaumet]

(This issue is opened following progress made on the specification at the OHBM Brainhack.)

Problem Statement

In the BIDS-Prov skeleton, we are currently referring directly to PROV terms (Activity/Entity/Agent).

Those should be replaced by subtypes that will be specific to BIDS-Prov (but generic enough to encompass any type of object).

Rationale

As a starting point "Activity" could be replaced by "Processing" as discussed w/ @ssaneei and Michael Dayan. "Entity" by "InputOutput" and "Agent" by "SoftwarePackage"?

Minimal example

{
"@context": "https://purl.org/nidash/bidsprov/context.json",  
"BIDSProvVersion": "1.0.0",
"records": {
	"SoftwarePackage": [
  	{
    	...
  	}
	],
	"Processing": [
  	{
    	...
  	},
  	...
  	}
	],
	"InputOutput": [
  	{
    	...
  	},
  	{
    	...
  	},
	]
  }
}
}

Log of related discussion on Gdoc:

[tiborauer]

I wonder whether we want to "recycle" NIDM-W