Task: Question Generation
Input (English): Passage: There were 88,296 households out of which 29.5% had children under the age of 18 living with them, 53.3% were Marriage living together, 9.1% had a female householder with no husband present, and 33.4% were non-families. 26.1% of all households were made up of individuals, 31.5% of households had individuals under 18 years, and 9.5% had someone living alone who was 65 years of age or older.  The average household size was 2.44 and the average family size was 2.96.
Output (English): which household was least common?