Andy, Yes, your understanding of the /chemicals_of_this_type is correct. It is used to classify "instance of this type" ... and not "part of" parent-child relationships. Here is the actual definition used in Freebase:
Chemical compounds that are included in this classification However, there are a few assumption errors in the data (Object/Values), that I agree probably need to be corrected later. Not sure how chemists classify a component of a Thing, i.e., the following statements need to be analyzed and understood by a chemist, but then there are layman concepts that should also probably be held in a new Wikidata property if the community finds it useful to explain chemicals: " It is one of the two components of starch, the other being amylose. " " Starch branching enzyme <https://en.wikipedia.org/wiki/Starch_branching_enzyme> introduces 1,6-alpha glycosidic bonds between these chains, creating the branched amylopectin. " Thad +ThadGuidry <https://www.google.com/+ThadGuidry> On Thu, Jun 18, 2015 at 7:50 AM, Andy Mabbett <[email protected]> wrote: > On 17 June 2015 at 20:17, Thomas Pellissier-Tanon <[email protected]> > wrote: > > @Andy > > >> It seems to me that, before the dats can be imported, we'll need to add > >> several new Wikidata properties. Was that your intention? > > > feel free to start the > > property creation process. I'm still at Google for 8 weeks so we have > time > > to go throw the property creation process. > > I'm happy to do that; but I may need some help with knowing what is > meant by each property. For example: > > > https://www.freebase.com/chemistry/chemical_classification/chemicals_of_this_type?instances= > > seems to be saying that Amylopectin is (in Wikidata terms) an > "instance of" (P31) a starch, but that doesn't seem right. > > Also, properties which require data-types that have not yet been set > up, such as measurements, will have to wait for those data types to > become available. That won't occur within eight weeks. > > -- > Andy Mabbett > @pigsonthewing > http://pigsonthewing.org.uk > > _______________________________________________ > Wikidata mailing list > [email protected] > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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