- DOCUMENT@0..8
    - OPERATION_DEFINITION@0..8
        - OPERATION_TYPE@0..5
            - query_KW@0..5 "query"
        - WHITESPACE@5..6 " "
        - SELECTION_SET@6..8
            - L_CURLY@6..7 "{"
            - R_CURLY@7..8 "}"
- ERROR@7:8 "expected at least one Selection in Selection Set" }
recursion limit: 500, high: 1