Clarification on exemption of property tax

Salam.

As per the exemptions mentioned on : http://excise.Punjab.Gov.Pk/property_tax#h6

"one residential house up to one kanal owned and occupied by a federal or provincial retired government servant is exempted"

Can anyone with the relevant knowledge please confirm/clarify what will be the situation if one part of a house which is up to a kanal and is owned and occupied by a retired government employee and the second part is rented out?

Will the retired government employee owner have to pay any property tax on the part of the property he has rented out?

Will he stay exempted for the part where he is living in?

Thank you