test_cases = [
    {
        "predictions": "a | b | c | pos",
        "references": "a | b | c | pos & e | f | g | neg",
        "result": {'ave match score of weight (1, 1, 1, 1)': 0.375,
                   'f1 score of exact match': 0.0,
                   'f1 score of optimal match of weight (1, 1, 1, 1)': 0.5}
    }
]