Add punctuation: Many famous writers artists scientists philosophers and eminent men were vegetarians
A: Many famous writers, artists, scientists, philosophers and eminent men were vegetarians.

Add punctuation: Vision ergometer U20 Touch add to comparison list
A: Vision ergometer U20 Touch add to comparison list.

Add punctuation: The manifest is an XML file that completely describes the content
A:
The manifest is an XML file that completely describes the content.