Question: What County that was incorporated on June 25, 1789 and named for John Hancock, has a short stream  from its source the river runs 5.4 mi south to its confluence with Mill Brook in Eastbrook?
{'answer': 'Hancock County', 'supporting_facts': [['Little Bog River', 0], ['Little Bog River', 1], ['Hancock County, Maine', 0], ['Hancock County, Maine', 3]]}