The value "250" may be invalid due to

surrounding whitespace/newlines being preserved.

The rdf:parseType="Literal" attribute is

missing.

RDF/XML does not support the XSD integer namespace.

SELECT (AVG(?p) AS ?res) WHERE

{ ?l :price ?p }

SELECT (MAX(?p) AS ?res) WHERE

{ ?l :price ?p }

:Oxford a :University

 :John a :University

:Oxford a :Laboratory

:John a :Professor

We can infer

:A :isNeighborOf :C

We can infer

:C :isNeighborOf :A

We can infer

:B :isNeighborOf :A

We can infer

that :A, :B, and :C are owl:sameAs each other.