I am not completely sure what you want Gaurav, since it depends on the perspective. 
In my understanding, it seems to be more like an ontology to represent facts in terms of a fact-checking perspective? So you have a claim (s="water", p="boiling point”, o=“100”), which has some evidence object (which is a set of proofs which argue in favour or against c) plus some further metadata and final indicator to classify c (in this case something like score =>0.9~1 hopefully)

So it’s like smt which comprehends fact-checking, argumentation mining and credibility factors. I am not aware of an official ontology for that though. If so, you may be interested in have a look here: https://dl.acm.org/citation.cfm?id=2852495 More specifically, the attached image, which is an RDF-based vocabulary to express such information. We did not publish the ontology itself and it could be improved. But definitely should be a good starting point. 

Best regards,

On 28. Mar 2018, at 15:02, Martynas Jusevičius <martynas@atomgraph.com> wrote:

Sounds also a lot like what Cyc was doing: http://www.cyc.com/opencyc/

On Wed, Mar 28, 2018 at 2:54 PM, Thad Guidry <thadguidry@gmail.com> wrote:
Your example of "water", "boiling point", and "100" "celsius" could be expressed with RDF Triples

A super simple example, is to capture facts with RDF statements and using the Turtle format to capture those statements:
Subject, Predicate, Object
<http://example.org/#water> <http://example.org/#boiling+point> <http://example.org/#100C> .
And good luck competing with https://www.wolframalpha.com/ :)

On Wed, Mar 28, 2018 at 3:14 AM Gaurav Verma <info@redrockdigimark.com> wrote:
Hi All,
I`m working on implementing Schema markup for our upcoming website which focuses on FACTS: historical facts, geographical facts, science, maths, language etc. Our aim is to provide a hub for information (like Wikipedia), but geared more towards representing information in very simple terms for use by AI: so that AI bots can use the schema and understand the data.

For example, a fact of water is that it boils at 100 degree celsius. In what schema may I represent the information of "water", "boiling point" and "100" "celsius"?

Can you please recommend what can I use for markup for such information?

Gaurav V