WARNING:  A REF metadata event is being deleted that covers evaluated reference LEXEMEs
    (type=SU, subtype=question, spkr=spkr2r, TBEG=20.0, TEND=23)

WARNING:  A SYS metadata event is being deleted that covers evaluated reference LEXEMEs
    (type=SU, subtype=question, spkr=spkr2s, TBEG=20.0, TEND=23)