update PortionOfMatter definitions

[akleinau]

closes #280.
Makes PortionOfMatter subclass definitions aristotelean.
The following classes remain after I updated the definitions because there whole defs need a rework:
LiquidBiofuel
ManufacturedCoalBasedGas
CollieryGas
OilAndPetroleumProducts
GasDieselOil
Perfluorocarbon
DamnedWater
Ocean
PumpedWater
Wave

[akleinau]

@stap-m, @l-emele can you help create those defs?

[akleinau]

maybe we should leave Ocean and Wave for now because I don't think they are good PortionOfMatter subclasses.

[l-emele]

Some proposals:

• A liquid biofuel is a biofuel that has normal state of matter liquid.
• A manufactured coal based gas is a gaseous fossil fuel that is manufactured from coal.
• Perfluorocarbons (PFCs) are portions of matter consisting of organic compounds that contain fluorine atoms but no hydrogen atoms. This is in line with the HFC definition. Do we already have the concept organic in the OEO? If not, could we import that from ChEBI? @jannahastings
• Colliery gas is a fossil gaseous fuel found in coal mines (British English: colliery). The main component is methane. Synonyms are firedamp, mine gas.
• Pumped water is water which was pumped into an upper reservoir and thus contains potential energy.

[akleinau]

than there are just missing:
GasDieselOil
OilAndPetroleumProducts
DamnedWater

I'll make this a "real" pull request so the other adapted definitions can be reviewed too.

[l-emele]

Suggested change

	<http://purl.obolibrary.org/obo/IAO_0000115> "Biogas is a portion of matter which has a gaseous state and is composed principally of methane and carbon dioxide produced by anaerobic digestion of biomass.",
	<http://purl.obolibrary.org/obo/IAO_0000115> "Biogas is a gaseous biofuel and is composed principally of methane and carbon dioxide produced by anaerobic digestion of biomass.",

[akleinau]

Same as charcoal, biogas is primarily a subclass of portion of matter. Would it be enough to add another sentence like "It is used as a fuel" at the end?

[stap-m]

Actually, for biogas it could make sense to make it a direct subclass of biofuel. I think the term is primarily used in the fuel context, unlike e.g. methane.

[akleinau]

ok it is now a direct subclass of Biofuel with the corresponding definition

[l-emele]

Suggested change

	<http://purl.obolibrary.org/obo/IAO_0000115> "Charcoal is a portion of matter consisting of the solid residue of the destructive distillation and pyrolysis of wood and other vegetal material."@en,
	<http://purl.obolibrary.org/obo/IAO_0000115> "Charcoal is a fuel consisting of the solid residue of the destructive distillation and pyrolysis of wood and other vegetal material."@en,

[akleinau]

Charcoal is primarily a subclass of portion of matter. Would it be enough to add another sentence like "It is used as a fuel" at the end?

[akleinau]

I updated the definitions in a way that they are coherent with the asserted hierarchy. I added the use as fuel as another sentence like I wrote with charcoal and biogas, also for the new definitions of @l-emele. That way the definitions follow the asserted view but also incorporate the inferred view with the new fuel hierarchy.

[akleinau]

OilAndPetroleumProducts: "OilAndPetroleumProducts are portions of matter derived from crude oil (petroleum) as it is processed in oil refineries." (source: https://en.wikipedia.org/wiki/Petroleum_product)
DamnedWater: "Damned water is water stopped by dams from flowing and thus contains energy useable for hydropower."