Question: What fortune 500, Michigan based company was the now chairman of Hologic once Chief Executive Officer of?
{'answer': 'Stryker Corporation', 'supporting_facts': [['Stephen P. MacMillan', 0], ['Stephen P. MacMillan', 1], ['Stephen P. MacMillan', 2], ['Stephen P. MacMillan', 3], ['Stephen P. MacMillan', 4], ['Stephen P. MacMillan', 5], ['Stryker Corporation', 0], ['Stryker Corporation', 1]]}