<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def read_model_from_config(cp, ifo, section="calibration"):
 """Returns an instance of the calibration model specified in the given configuration file. Parameters cp : WorflowConfigParser An open config file to read. ifo : string The detector (H1, L1) whose model will be loaded. section : {"calibration", string} Section name from which to retrieve the model. Returns ------- instance An instance of the calibration model class. """

    model = cp.get_opt_tag(section, "{}_model".format(ifo.lower()), None)
    recalibrator = models[model].from_config(cp, ifo.lower(), section)

    return recalibrator