{
    "queries": [
        {
            "index": 0,
            "type": "input",
            "content": "x = 5"
        },
        {
            "index": 1,
            "type": "input",
            "content": "y = x + 10"
        },
        {
            "index": 2,
            "type": "exec",
            "content": "engine.symbol_table"
        },
        {
            "index": 3,
            "type": "exec",
            "content": "len(engine.equations)"
        },
        {
            "index": 4,
            "type": "exec",
            "content": "list(engine.base_context.keys())[:10]"
        },
        {
            "index": 5,
            "type": "exec",
            "content": "engine.get_available_types()"
        },
        {
            "index": 6,
            "type": "exec",
            "content": "list(engine.registered_types_info['registered_classes'].keys())"
        },
        {
            "index": 7,
            "type": "exec",
            "content": "engine.registered_types_info['class_count']"
        },
        {
            "index": 8,
            "type": "input",
            "content": "z = solve(a**2 + b, a)"
        },
        {
            "index": 9,
            "type": "exec",
            "content": "engine._classify_line('z = solve(a**2 + b, a)')"
        },
        {
            "index": 10,
            "type": "exec",
            "content": "engine._extract_variable_names('x + y + z')"
        }
    ]
}