Question: law of attraction and repulsion between electrostatic charges
[{'answer': "Coulomb 's law", 'provenance': [{'wikipedia_id': '26288711', 'title': "Coulomb's law", 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Atomic forces.\n'}]}]