Add punctuation: Unsure about which type of W3CA file you have Do you want to know exactly what it is who created it and how to open it
A: Unsure about which type of W3CA file you have? Do you want to know exactly what it is, who created it, and how to open it?

Add punctuation: Ireland Lotto numbers Saturday 13 February 2016
A: Ireland Lotto numbers - Saturday 13 February 2016

Add punctuation: On Friday we can expect fair weather Morning temperatures will be around 17 C During the day they will reach a maximum of 29 C Low temperatures at night will be around 17C We have weak northerly winds
A:
On Friday we can expect fair weather. Morning temperatures will be around 17 C. During the day they will reach a maximum of 29 C. Low temperatures at night will be around 17C. We have weak northerly winds.