Question: "Medusa" is the eighth episode of the second season from The CW television series "Supergirl", which aired on which date, the episode features a minor tie-in with the Arrowverse crossover event "Invasion!"?
Sentence (from "Invasion! (Arrowverse)"): Events at the end of the "Supergirl" episode "Medusa" on November 28, 2016 marked the beginning of the crossover, which officially began on November 29 with "The Flash", continued on "Arrow" on November 30, and concluded on "Legends of Tomorrow" on December 1.
Relevant evidence: No