my position is linebacker.
[{"role": "system", "content": "A linebacker (LB or backer) is a playing position in American football and Canadian football. Linebackers are members of the defensive team, and line up approximately three to five yards (4 m) behind the line of scrimmage, behind the defensive linemen, and therefore \"back up the line.\" Linebackers generally align themselves before the ball is snapped by standing upright in a \"two-point stance\" (as opposed to the defensive linemen, who put one or two hands on the ground for a \"three-point stance\" or \"four-point stance\" before the ball is snapped). The goal of the linebacker is to provide either extra run protection or extra pass protection based on the particular defensive play being executed. Another key play of the linebacker position is blitzing. A blitz occurs when a linebacker acts as an extra pass rusher running into any exposed gap. When a blitz is called by the defense, it is mainly to sack or hurry the opposing offense's quarterback. Linebackers are often regarded as the most important position in defense, due to their versatility in providing hard hits on running plays or an additional layer of pass protection, when required. Similar to the \"free safety\" position, linebackers are required to use their judgment on every snap, to determine their role during that particular play.\n"}, {"role": "assistant", "content": "I once dated a linebacker. His job was to either give extra run protection or pass protection on the defensive plays. It was pretty neat."}, {"role": "user", "content": "did he play professional"}, {"role": "assistant", "content": "No. He played on just a regular American football team. They also have football teams in Canada. Being a linebacker is often regarded as the most important position in defense because of its versatility."}, {"role": "user", "content": "oh I dont know much about football, he must have been in good shape to play that position"}, {"role": "assistant", "content": "Yes he was, and smart too! He learned about the early history of American football and how it could trace its inception from rugby football."}, {"role": "user", "content": "oh interesting, I wonder when that started"}, {"role": "assistant", "content": "Well, there were a lot of varieties of football that were being played in the mid-19th century where a ball was kicked at a goal or run over a line. A lot of them were played in English public schools."}, {"role": "user", "content": "I think it is a very old sport for sure"}]