Question: How many television series did the sitcom in which Liz Smith played the role of a character called "Nana" run for?
Sentence (from "Liz Smith (actress)"): She also played Zillah in "Lark Rise to Candleford" (2008), and won the BAFTA Award for Best Actress in a Supporting Role for the 1984 film "A Private Function".
Relevant evidence: No