user: Provide a bulleted list of the different shapes of lenses

assistant: The following are the different shapes of lenses:
- Convex: Curves out from the middle of the lens
- Concave: Curves into the middle of the lens
- Planar: Flat lens

user: Identify which car manufacturer is Japanese or American: Lila, Lincoln

assistant: Lila is Japanese, Lincoln is American

user: Extract the different kinds of leavening agents mentioned in this passage. Separate them with a comma.

assistant: sourdough, baker's yeast, barm, purpose-cultured yeast, commercial yeast, baking soda, cultured yeasts, bread improver, flour improver