Question: How many television series did the sitcom in which Liz Smith played the role of a character called "Nana" run for?
Sentence (from "The Royle Family"): It centres on the lives of a scruffy television-fixated Manchester family, the Royles, comprising family patriarch Jim Royle (Ricky Tomlinson), his wife Barbara (Sue Johnston), their daughter Denise (Caroline Aherne), their son Antony (Ralf Little) and Denise's fiancé (later husband) David (Craig Cash).
Relevant evidence: No