premise: Kristine Valdresdatter is a Norwegian silent film from 1930. This was the last silent film produced in Norway and it was directed by Rasmus Breistein. Breistein also wrote the script, which was based on Hans Andersen Foss's novel "Kristine: En fortælling fra Valdres" (Kristine: A Tale from Valdres). The film premiered on December 26, 1930 and it has been aired several times by NRK.
hypothesis: Valdresdatter appeared in 30 films in her lifetime. 
reason: It is not known in this paragraph how many films that Valdresdatter was in her career. The system couldn't deduce that information either. 