Which novel is not written by Jane Austen?

Jane Austen, (born December 16, 1775, Steventon, Hampshire, England—died July 18, 1817, Winchester, Hampshire), English writer who first gave the novel its distinctly modern character through her treatment of ordinary people in everyday life.
She published four novels during her lifetime:
- Sense and Sensibility (1811),
- Pride and Prejudice (1813),
- Mansfield Park (1814), and
- Emma (1815).

Lamia (poem):
- Lamia'' is a narrative poem written by the English poet John Keats.
- It was written in 1819 and first published in 1820.

[Source: Encyclopaedia Britannica]