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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def from_jsons(graph_json_str: str, check_version: bool = True) -> BELGraph: """Read a BEL graph from a Node-Link JSON string."""

    graph_json_dict = json.loads(graph_json_str)
    return from_json(graph_json_dict, check_version=check_version)