Question: working edge of an alidate is known as
[{'answer': 'fiducial edge', 'provenance': [{'wikipedia_id': '462030', 'title': 'Alidade', 'start_paragraph_id': 7, 'start_character': 390, 'end_paragraph_id': 7, 'end_character': 403, 'bleu_score': 1.0, 'section': 'Section::::Examples of old alidade types.\n'}]}, {'provenance': [{'wikipedia_id': '462030', 'title': 'Alidade', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 403, 'bleu_score': 0.972782728923768, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15238747852519677992}, 'section': 'Section::::Examples of old alidade types.\n'}]}]