@ ProgramNode (location: (1,0)-(3,3))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(3,3))
    └── body: (length: 2)
        ├── @ RationalNode (location: (1,0)-(1,5))
        │   ├── flags: decimal
        │   ├── numerator: 421
        │   └── denominator: 10
        └── @ RationalNode (location: (3,0)-(3,3))
            ├── flags: decimal
            ├── numerator: 42
            └── denominator: 1