@prefix : <https://eyereasoner.github.io/eye/reasoning#>.

:marriedTo a :SymetricRelation.
:alice :marriedTo :bob.
:bob :marriedTo :alice.
{
    :alice :marriedTo :bob.
} :since "1999".
{
    :bob :marriedTo :alice.
} :since "1999".
:TEST :PASS 1 .
:TEST :PASS 2 .
:TEST :PASS 3 .
