Question: What is the name of the episode from the "Walking Dead" where Rosita Espinosa and the others find the Alexandria Safe Zone?

<P0-S0> Dr. Eugene Porter is a fictional character from the comic book series "The Walking Dead" and is portrayed by Josh McDermitt beginning in the fourth season of the American television series of the same name. <P0-S1>  In both mediums he claims to be a scientist who knows the cure to the zombie plague and is being escorted to Washington D.C. by Sgt. Abraham Ford and Rosita Espinosa, and encounter Rick Grimes and his group and recruit them to assist their mission. <P0-S2>  Eugene is overweight and possesses virtually no survival skills of his own and is extremely dependent on the group for survival, but is highly intelligent and resourceful in using technology to ensure the group's survival. <P0-S3>  Eventually Eugene is revealed to have lied and is not a scientist, but a High School science teacher, and doesn't know how to cure the virus and lied to manipulate the other survivors into taking him to Washington D.C. believing it to be the best chance for survival. <P0-S4>  This proves true as the group eventually finds the Alexandria Safe-Zone where Eugene becomes its primary engineer. <P0-S5>  Though his lie puts a strain on their friendship, Abraham eventually forgives him and they resume being friends. <SEP> <P1-S0> Christian Marie Serratos (born September 21, 1990) is an American actress who plays Rosita Espinosa in AMC's "The Walking Dead" TV series, based on the comic book of the same name. <P1-S1>  She is also known for playing Suzie Crabgrass in the Nickelodeon series "Ned's Declassified School Survival Guide" and Angela Weber in "The Twilight Saga" series. <SEP> <P2-S0> Rosita Espinosa is a fictional character from the comic book series "The Walking Dead" and is portrayed by Christian Serratos in the American television series of the same name. <P2-S1>  She accompanies Eugene Porter and Abraham Ford on a mission to Washington, D.C. In the comic book series, she joins Rick Grimes' group after they leave Hershel Greene's farm and go to DC. <P2-S2>  Eventually Eugene is revealed to have lied but they continue onto Washington anyway, since he was still convinced the city would offer greater chance of survival, and they eventually find the Alexandria Safe-Zone. <P2-S3>  Rosita also takes part in the war against the Saviors led by Negan it's conclusion of which sees the 4 communities uniting forces. <P2-S4>  Though she and Abraham continue their relationship she eventually breaks up with him when he cheats on her with Holly and moves in with Eugene, eventually starting a relationship with him, but forgives Abraham after he is killed by Dwight. <P2-S5>  Two years later Rosita and Eugene are married but their relationship is strained. <P2-S6>  Rosita is revealed to be pregnant, but Eugene is not the father. <P2-S7>  She is ultimately killed by Alpha, leader of the Whisperers, along with 11 other key members of all 4 communities. <SEP> <P3-S0>  The episode was written by Heather Bellson and Seth Hoffman, and directed by Ernest Dickerson. <P3-S1>  The episode centers on Abraham Ford, Eugene Porter, Rosita Espinosa, Tara Chambler, Glenn Rhee, and Maggie Greene, who have left the church and their fellow survivors to pursue a mission to Washington, D.C., by bus. <P3-S2>  Upon their journey, they encounter numerous problems, and Abraham's past and his keen desire to continue on the mission are explored throughout the narrative. <P3-S3> "Self Help" is the fifth episode of the fifth season and 56th episode overall of the post-apocalyptic horror television series "The Walking Dead", which aired on AMC on November 9, 2014.