Here’s structured data, representable as graph, using RDF-Turtle in response to the examples of the attributes that you mentioned.
I’ve deliberately used strings as I am trying to provide the simplest response possible to your question.
## RDF-Turtle Start ##
@prefix : <#> .
:this a :Person .
:this :age "Twenty"^^xsd:string .
:this :height "6 Feet"^^xsd:string .
## RDF-Turtle End ##