Question: what do pointed arches do with the weight of a structure
[{'answer': 'less thrust at the base', 'provenance': [{'wikipedia_id': '52070', 'title': 'Arch', 'start_paragraph_id': 14, 'start_character': 178, 'end_paragraph_id': 14, 'end_character': 201, 'bleu_score': 1.0, 'section': 'Section::::Basic concepts.:Types of arches.\n'}]}, {'provenance': [{'wikipedia_id': '52070', 'title': 'Arch', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 302, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12038927074416463932}, 'section': 'Section::::Basic concepts.:Types of arches.\n'}]}]