That's a narrow definition of KG close to RDF model.
Freebase's original definition runs like:
"Human knowledge organized as a graph"
I would consider that concept a "natural kind"
In my appreciation of pertinent contexts,
contrary to claims to the opposite,
neither the world, or a KG is "a collection facts"
as in the tractatus. what we can share
is always some articulation of our tacit awareness.
We allways go beyond, logic or syllogisms,
more like Descartes intutive (informal) notion of illation
which is but creating associations between pieces of knowledge in some way going from one piece to another in some 'truth' preserving way.
In our thinking., I would say this illation is not just about preserving of truth,
but something of significance or even enacted.
For me a knowledge graph is some way of capturing knowledge,in a graph,
where the nodes are articulation/formulation of shareable symbolic/digital presentation of 'knowledge'
the edges are named machine processable constructs, that convey in some sense or even through operations what the meaning/significance/intent/process that connects the nodes 'is' that it links.
I mean, here indeed, it all depends on what the meaning of the 'is' is, or any other associative/regulative concept
human ingenuity finds/proposes to be useful/relavant/effective in some conext of adjacent
associative complexes.
My sense of "reasoning" is broader than anything that can be formalized, executed by machine.
It is closer to Hegel's (Taoist) notion of Reason that links it to the Real by saying
"The Real is Reasonable", "The Reasonable is in some sense Real"
in the sense of through existence the real embodies everything that pertains to its possibility.
Of course, in reasoning we are in the realm of
"description" but it does contain in intself the possibility
of "being real". By ex-plaining (laying out in a plane for all to see) things, we are laying the connections adjacent descriptive complexes out so that we can appreciate to what extend that is being described can taken it to be real.
My all time favourite quote on this topic is:
https://hyp.is/jJEAmkEgEemoiANeeeGUjw/www.chilton-computing.org.uk/inf/pdfs/kay.htm
"for nothing destroys description so much as words,
and yet there is nothing more necessary than
to place before the eyes of men
certain things the existence of which is
neither provable nor probable,
but which, for this very reason,
pious and scholarly men treat to a certain extent as existent in order that they may be led a step further towards their being and their becoming. --Joseph Knecht's holograph translation (M.L.)
