﻿* 
* My conclusions:
< John is a parent of Paul.
< 
* 
* My conclusions:
< Anna is a parent of Paul.
< 
* 
* Your information:
< Paul has 2 parent [plural of 'parent' is unknown], called John and Anna.
* 
* Related information:
< Anna is a parent of Paul.
< John is a parent of Paul.
< 
* 
* You have entered plural noun "parents", which was unknown to me.
* 
