Question: Sirena Irwin voiced Mama Krabs in which first episode of the 5th season of SpongeBob SquarePants?
Sentence (from "Friend or Foe (SpongeBob SquarePants)"): "Friend or Foe" is the first episode of the fifth season and the 81st overall episode of the American animated television sitcom "SpongeBob SquarePants".
Relevant evidence: Yes