General format in everyday language: Flow F is given in proportion to X amount of [Time OR Flow G] of activity A (this last information may be omitted if we require that Flow F and G are always from the same activity, but the more general option is to specify the activity)

Alternative formalisation: Flow A hasPropertyRelation of amount X of [Time OR Flow G] of activity A

Example 1: 614790.55 tonne of Rice output hasPropertyRelation of 1 year of Time of Australian rice production

Example 2: 5.5 tonne of carbon dioxide output hasPropertyRelation of 1000 kg of steel output of Australian steel production

Example 3: 444 tonne of carbon dioxide output hasPropertyRelation of 614790.55 tonne of Rice output of Australian rice production

(numbers in examples are not necessarily reflection any real size of flows)

Possible RDF formalisation of Example 1:

    "measure":{

        "@type":"om:Measure",

        "om:hasNumericalValue":"614790.55",

        "om:hasUnit":"om:tonne",

        "propertyRelation":{

            "activity":"A_PARI",

            "om:hasNumericalValue":"1",

            "om:hasUnit":"om:year"

        }