Add punctuation: This villa is located on the hillside just behind the mainstreet of Alanya Walking distance to city centre is only 15 km
A: This villa is located on the hillside just behind the mainstreet of Alanya. Walking distance to city centre is only 1,5 km.

Add punctuation: This is an excerpt of an interview with Swami Prajnanananda Giri for the PhenomeNews radio program in Detroit USA in December 1996
A: (This is an excerpt of an interview with Swami Prajnanananda Giri for the "PhenomeNews" radio program in Detroit, USA, in December 1996)

Add punctuation: Now those games are fashionable with old cars or vintage cars
A:
Now those games are fashionable with old cars or vintage cars.