def MinimalRnaalifoldParser(lines):
    """MinimalRnaalifoldParser.
        returns lists of sequence, structure_string, energy
    """
    res = []
    if lines:
        for i in range(0, len(lines), 2):
            seq = lines[i].strip()
            struct, energy = lines[i + 1].split(' (')
            energy = float(energy.split('=')[0].strip(' \n)'))
            res.append([seq, struct, energy])
    return res
