error: unsupported operand types for `>`
--> main.sml:1:8
     |
   1 | Query = Foo > Bar
     |         ^ no implementation for `str > int`
--> (1) main.sml:1:8
     |
   1 | Query = Foo > Bar
     |         ^ has type `str`
--> (2) main.sml:2:0
     |
   2 | Foo = Entity(type="Name", id="some name")
     | ^ variable `Foo` with incompatible type `str` originally defined here
--> (3) main.sml:1:14
     |
   1 | Query = Foo > Bar
     |               ^ has type `int`
--> (4) main.sml:3:0
     |
   3 | Bar = Entity(type="User", id=123)
     | ^ variable `Bar` with incompatible type `int` originally defined here