PREFIX : <https://example.org/ns/example#>

_:e_u_1 a :Unicorn.
_:e_e_1 a :UnicornEater.
{?U_0 a :Unicorn} => {{?U_2 a :UnicornEater} => {?U_0 :is :threatened}}.
{?U_1 a :UnicornEater} => {_:e_u_1 :is :threatened}.
_:e_u_1 :is :threatened.

