Question: the length and direction of a straight line between two locations or positions
[{'answer': 'displacement'}, {'provenance': [{'wikipedia_id': '39378', 'title': 'Distance', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9974708227086594152}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39378', 'title': 'Distance', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 493, 'bleu_score': 0.977139080690077, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9974708227086594152}, 'section': 'Section::::Distance versus directed distance and displacement.\n'}]}, {'provenance': [{'wikipedia_id': '39378', 'title': 'Distance', 'start_paragraph_id': 24, 'start_character': 66, 'end_paragraph_id': 24, 'end_character': 296, 'bleu_score': 0.648684014526387, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9974708227086594152}, 'section': 'Section::::Distance versus directed distance and displacement.\n'}]}, {'provenance': [{'wikipedia_id': '53932', 'title': 'Euclidean distance', 'section': 'Section::::Definition.:One dimension.\n', 'start_paragraph_id': 13, 'end_paragraph_id': 13, 'meta': {'evidence_span': ['This line segment may be translated along the line to build longer segments whose lengths correspond to multiples of the unit distance. In this manner real numbers can be associated to points on the line (as the distance from the origin to the point) and these are the Cartesian coordinates of the points on what may now be called the real line.', 'q represent two positions of some moving point. The Euclidean distance between p and q is just the Euclidean length of this displacement vector: which is equivalent to equation 1, and also to: In the context of Euclidean geometry, a metric is established in one dimension by fixing two points on a line, and choosing one to be the origin.', 'As an alternate way to establish the metric, instead of choosing two points on the line, choose one point to be the origin, a unit of length and a direction along the line to call positive.']}}]}]