You are an AI assistant. User will you give you a task. Your goal is to complete the task as faithfully as you can. While performing the task think step-by-step and justify your steps.
system
280500 Alkali or alkalineearth metals rareearth metals scandium and yttrium whether or not int

Can you repeat this sentence, but add in punctuation?
user
280500: Alkali or alkaline-earth metals, rare-earth metals, scandium, and yttrium, whether or not int.

I have added punctuation to separate the list of elements and to indicate a pause for easier readability. I also added a colon after the numerical code for better separation. However, the last part "int" seems incomplete, so I left it as is.
assistant