Question: What episode of parks and rec does leslie find out she's pregnant?

Disambiguated questions and answers:
context: Leslie is a key member in the absorbing of Eagleton into Pawnee because of a debt problem in Eagleton. After a heroic filibuster which wins the citizens of former Eagleton voting rights, Leslie is recalled and replaced with her Eagletonian counterpart, Ingrid de Forest (Kristen Bell). Leslie gets the lot and park for the Pawnee Commons after a heated debate between her and Councilman Jamm, in return for five worthless IOU's from Chris (who was soon leaving his post as City Manager). She dedicates the unofficial groundbreaking of Pawnee Commons to Ann before she and Chris leave for Michigan in ‘’Ann and Chris’’. In "Flu Season 2", Leslie discovers that she is pregnant. In "One in 8,000" after a visit to a doctor, Ben and Leslie find out that they are going to have triplets. Soon after, the Unity Concert is nearing, and Leslie is offered a position in the National Park Service, in Chicago. After stalling on her decision for most of the season Leslie is eventually convinced by Ben to accept the job, but then after finding out that the Parks Department had her declared as one of the new founders of the new town of Pawnee, she convinces her new boss to relocate their office from Chicago to the Third Floor of Pawnee City Hall. Three years from the end of season six, Leslie and Ben have three children, and Leslie is the head of the Midwest Parks Service in the bustling third floor of Pawnee City Hall.
question: What is the name of the episode of parks and rec where leslie finds out she's pregnant?
short_answers: Flu Season 2
wikipage: Leslie Knope
context: No context provided
question: What episode of season 6 of parks and rec does leslie find out she's pregnant?
short_answers: 19

Long-form answers:
knowledge: content: Parks and Recreation (also known as Parks and Rec) is an American political satire mockumentary sitcom television series created by Greg Daniels and Michael Schur. 
wikipage: Parks and Recreation
content: The series aired on NBC from April 9, 2009, to February 24, 2015, for 125 episodes, over seven seasons. A special reunion episode aired on April 30, 2020.[1][2][3][4] The series stars Amy Poehler as Leslie Knope, a perky, mid-level bureaucrat in the Parks Department of Pawnee, a fictional town in Indiana. 
wikipage: Parks and Recreation
content: Deputy Director of the Parks and Recreation Department of the fictional city of Pawnee, Indiana. In "Flu Season 2", Leslie discovers that she is pregnant. In "One in 8,000", after a visit to a doctor, Ben and Leslie find out that they are going to have triplets.
wikipage: Leslie Knope
long_answer: Parks and Recreation, also known as Parks and Rec, is an American political satire mockumentary sitcom television series created by Greg Daniels and Michael Schur. The series aired on NBC from April 9, 2009, to February 24, 2015, for 125 episodes, over seven seasons. The series stars Amy Poehler as Leslie Knope, Deputy Director of the Parks and Recreation Department of Pawnee, a fictional town in Indiana.  During episode 19 of season 6 "Flu Season 2" Leslie finds out that she is pregnant with triplets.