Question: when are the originals introduced in the vampire diaries
[{'answer': 'Season two', 'provenance': [{'wikipedia_id': '28462351', 'title': 'The Vampire Diaries (season 2)', 'start_paragraph_id': 1, 'start_character': 312, 'end_paragraph_id': 1, 'end_character': 322, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28462351', 'title': 'The Vampire Diaries (season 2)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1515, 'bleu_score': 0.9601554338453481, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 424500546378219764}, 'section': 'Section::::Abstract.'}]}]