import json


def normalize_single_model_value(model):
    """Standardize a single plane model string.

    Args:
        model (str) - a plane model name

    Returns:
        normalized_model_value (str) - a standardized model name
    """
    # json file storing plane model strings as key and standardized model
    # as value
    with open("plane_model_dict.json", "r") as file_path:
        plane_model_dict = json.load(file_path)

    # check for model value, if not present return None
    normalized_model_value = plane_model_dict.get(model, None)

    return normalized_model_value