Dennis Green is a football coach.
If a person coach a football club, the person is a football coach. If a person has a position in a club for a position in a year, and the club is in NFL in the same year, the person plays in NFL. Minnesota Vikings is a football club. Dennis Green coached Minnesota Vikings. Cris Carter had 13 touchdown receptions. Minnesota Vikings was in the National Football League in 1997. John Randle was Minnesota Vikings defensive tackle in 1997.
∀x ∀y (Coach(x, y) ∧ IsFootballClub(y) → IsFootballCoach(x)) ∀x ∀y ∀z (PlayFor(x, y) ∧ NFLTeamYear(y, z) ∧ InTeam(x, z) → PlayInNFL(x)) IsFootballClub(minnesota_Vikings) Coach(dennis_Green, minnesota_Vikings) TouchDownReceptionTime(cris_Carter, t13) NFLTeamYear(minnesota_Vikings, y1997) Position(john_Randle, defensive_tackle) ∧ InTeam(john_Randle, y1997) ∧ PlayFor(john_Randle, minnesota_Vikings)