expected(one,alice,["John acquires British citizenship on 2021-10-9T0:0:0.0"]).
expected(one,harry,["John acquires British citizenship on 2021-10-9T0:0:0.0"]).
expected(one,trust_harry,["John acquires British citizenship on 2021-10-9T0:0:0.0"]).
expected(one,alice_harry,["John acquires British citizenship on 2021-10-9T0:0:0.0"]).