def METHOD_NAME(aliasDF, clusterLabels, species):
    if species == 'Streptococcus pneumoniae':
        GPS_name = 'unrecognised'
        for label in clusterLabels:
            if label in list(aliasDF['sample']):
                index = list(aliasDF['sample']).index(label)
                GPS_name = aliasDF['GPSC'][index]
        alias_dict = {"GPSC":str(GPS_name)}
    return alias_dict