query: Nfl history - Pre 1950's
positive_passages.docid: 150918
positive_passages.text: Running After Being Knocked Off Feet in the NFL
negative_passages.docid: 103173
negative_passages.text: In search of a Grammar text, of any vintage, that covers such as the below
negative_passages.docid: 31687
negative_passages.text: Classification of groups of order 30
negative_passages.docid: 141291
negative_passages.text: Time of a ball going up and down with air resistance
negative_passages.docid: 80957
negative_passages.text: Information on month old flights
negative_passages.docid: 67035
negative_passages.text: History of dot product and cosine
negative_passages.docid: 103032
negative_passages.text: Development of the Idea of the Determinant
negative_passages.docid: 39813
negative_passages.text: Horizontal Rule between 's
negative_passages.docid: 53341
negative_passages.text: Where can I find the points per game throughout many NBA seasons?
negative_passages.docid: 92874
negative_passages.text: Flag history shows different formatting for answers and questions
negative_passages.docid: 51166
negative_passages.text: While watching a football game on TV, what does "1st & 10" mean?
negative_passages.docid: 3152
negative_passages.text: How do I read the history of my reputation?
negative_passages.docid: 54936
negative_passages.text: Two Player Draft Formats
negative_passages.docid: 44578
negative_passages.text: Format of review history
negative_passages.docid: 92709
negative_passages.text: The Ball From A Pass
negative_passages.docid: 68546
negative_passages.text: Statistic for views over time
negative_passages.docid: 30586
negative_passages.text: Expected number of games played in a game with 'win by two' rule.