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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 reach_process_pmc():
 """Process PubMedCentral article and return INDRA Statements."""

    if request.method == 'OPTIONS':
        return {}
    response = request.body.read().decode('utf-8')
    body = json.loads(response)
    pmcid = body.get('pmcid')
    rp = reach.process_pmc(pmcid)
    return _stmts_from_proc(rp)