{'declarativized': 'the magnetic force pulling paper clips to a powerful electromagnet is a kind of force that requires contact between two objects for one to push or pull the other', 'correct': False, '__index_level_0__': 1666}
"None"
{'declarativized': 'the magnetic force pulling paper clips to a powerful electromagnet is a kind of force that requires contact between two objects for one to push or pull the other', 'correct': False, '__index_level_0__': 1666}