PREFIX ex: <http://example.com/ns#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX sh: <http://www.w3.org/ns/shacl#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>

INSERT DATA {

ex:validPerson1 a ex:Person ;
       	ex:knows1 ex:p1.

ex:p1 ex:knows2 ex:p2.
ex:p1 ex:knows2 ex:p2_1.

ex:p2_1 ex:knows3 ex:p3.
ex:p2 ex:knows3 ex:p3.

ex:p3 ex:knows4 ex:p4.


}
