Question: where does dna replication begin on a chromosome
[{'answer': 'bidirectionally or unidirectionally', 'provenance': [{'wikipedia_id': '619137', 'title': 'Origin of replication', 'start_paragraph_id': 2, 'start_character': 44, 'end_paragraph_id': 2, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '619137', 'title': 'Origin of replication', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 79, 'bleu_score': 0.8070557274927981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12302332094387910464}, 'section': 'Section::::Abstract.'}]}]