QUESTION: Fix punctuation: The ondemand tankless water heater as the name implies works without a tank Basically it is a unit containing heating coils
ANS: The on-demand tankless water heater, as the name implies, works without a tank. Basically, it is a unit containing heating coils.

QUESTION: Fix punctuation: The untreated patients or patients with late onset preventive therapy for at least 50 patients developed within 1020 years pronounced difficulty in walking
ANS: The untreated patients or patients with late onset preventive therapy for at least 50% patients developed within 10-20 years pronounced difficulty in walking.

QUESTION: Fix punctuation: FA14S06 Referendum on joining the Unified Patent Court 2014 by area in Fyns Storkreds DISCONTINUED
ANS: FA14S06: Referendum on joining the Unified Patent Court 2014 by area in Fyns Storkreds (DISCONTINUED)

QUESTION: Fix punctuation: The hostess are singer and songwriter and are writing a proffessorat about the Portugal musicstyle Fado
ANS:
The hostess are singer and songwriter and are writing a proffessorat about the Portugal musicstyle Fado.