Creating a Geo Point using RDF Triplet Format

I have a Type Org defined as:

type Org {
	org_id
	name
	address
	city
	state
	postal_code
	country
	geo_location
}

org_id: string @index(term) .
name: string @index(term) .
address: string @index(term) .
city: string @index(term) .
state: string @index(term) .
postal_code: string @index(term) .
country: string @index(term) .
geo_location: geo .

The geo_location field is intended to be a Point. I’ve come across JSON mutation/insert examples, but how do I go about specifying the geo_location Point coordinates using RDF triplet format?

I’ve tried multiple variations on the following but haven’t had any success:

{
	set {
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <org_id> "b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz" .
            _:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <dgraph.type> "Org" . 
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <name> "Giants" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <address> "24 Willie Mays Plaza" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <city> "San Francisco" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <state> "CA" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <postal_code> "94017" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <country> "USA" .
			_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <geo_location> (37.77876,-122.38923) .
	}
}

Thanks in advance!

I came across this link here

It looks like the RDF format is:

_:b78324eb-9fa8-4f8c-9510-9fbc7ee17ffz <geo_location> "{\"type\":\"Point\",\"coordinates\" [-122.38923,37.77876]}"^^<geo:geojson> .

Yep, GeoJson is the right format to use. There are no others.

Cheers.