Question: what is the second book in the mortal instruments series
[{'answer': 'City of Ashes', 'provenance': [{'wikipedia_id': '22761800', 'title': 'The Mortal Instruments', 'start_paragraph_id': 24, 'start_character': 147, 'end_paragraph_id': 24, 'end_character': 160, 'bleu_score': 1.0, 'section': 'Section::::Critical reception.\n'}]}]