Quoc: The fleur-de-lis / fleur-de-lys (plural: fleurs-de-lis / fleurs-de-lys) or flower-de-luce is a stylized lily (in French, fleur means "flower", and lis means "lily") that is used as a decorative design or motif, and many of the Catholic saints of France, particularly St. Joseph, are depicted with a lily. Since France is a historically Catholic nation, the fleur-de-lis became "at one and the same time, religious, political, dynastic, artistic, emblematic, and symbolic", especially in French heraldry.

Answer this question based on the passage: what kind of flower is the fleur de lis?
HW Chung: OK, some thoughts:
To answer the above question, the relevant sentence is: The fleur-de-lis / fleur-de-lys (plural: fleurs-de-lis / fleurs-de-lys) or flower-de-luce is a stylized lily (in French, fleur means "flower", and lis means "lily") that is used as a decorative design or motif, and many of the Catholic saints of France, particularly St. Joseph, are depicted with a lily. The answer is a lily.