premise: When the Berlin Wall fell in early November, 1989 Berlin's east and west sections were rejoined to create the third-largest city in Europe , with a population of about 3 million.
hypothesis: In the first part of the year the Berlin wall fell
reason: The Berlin Wall fell in November making my statement incorrect. The model was probably confused by the vague language I used. Instead of picking a month a used the word year which probably tripped it up.