[BUG] Overlapping slots in KVRET dataset

[ytxmobile98]

It came to my attention that in the KVRET dataset (permalink), the file dialogues.json has one sample that contains overlapping slots:

{
  "speaker": "user",
  "utterance": "I need the reminder at 7pm for the yoga class on December 12th.",
  "utt_idx": 2,
  "dialogue_acts": {
    "binary": [],
    "categorical": [],
    "non-categorical": [
      {
        "intent": "inform",
        "domain": "schedule",
        "slot": "date",
        "value": "yoga class",
        "start": 35,
        "end": 45
      },
      {
        "intent": "inform",
        "domain": "schedule",
        "slot": "event",
        "value": "yoga class",
        "start": 35,
        "end": 45
      }
    ]
  },
  "state": {
    "schedule": {
      "date": "Yoga class",
      "event": "Yoga Class",
      "agenda": "reminder"
    }
  }
}

Here the term "Yoga class" is both classified as both a date and an event. Shouldn't the date be December 12th instead?