query: How many novels did Charles Dickens write?
passage: Charles Dickens
Born in Portsmouth, Dickens left school to work in a factory when his father was incarcerated in a debtors' prison. Despite his lack of formal education, he edited a weekly journal for 20 years, wrote 15 novels, five novellas, hundreds of short stories and non-fiction articles, lectured and performed readings extensively, was an indefatigable letter writer, and campaigned vigorously for children's rights, education, and other social reforms.
passage: A Tale of Two Cities
The 45-chapter novel was published in 31 weekly instalments in Dickens' new literary periodical titled "All the Year Round". From April 1859 to November 1859, Dickens also republished the chapters as eight monthly sections in green covers. All but three of Dickens' previous novels had appeared only as monthly instalments. The first weekly instalment of "A Tale of Two Cities" ran in the first issue of "All the Year Round" on 30 April 1859. The last ran thirty weeks later, on 26 November.