Question: the process to discover plain text or key is known as
[{'answer': 'Cryptanalysis', 'provenance': [{'wikipedia_id': '175560', 'title': 'Ciphertext', 'start_paragraph_id': 21, 'start_character': 11, 'end_paragraph_id': 21, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Types of ciphers.:Modern ciphers.\n'}]}, {'provenance': [{'wikipedia_id': '175560', 'title': 'Ciphertext', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 594, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16014363807266382455}, 'section': 'Section::::Cryptanalysis.\n'}]}]