_: {I: Int | I <= 5} = 4
_: {I: Int | I < 5} = 4
_: {I: Int | I < 5 and I != 3} = 4
_: {I: Int | I < 5 or I != 3} = 4
_: {I: Int | I < 5 or I != 3 and I != 4} = 4