QUESTION: Fix punctuation: But Marathon Sport and Nike are not alone in making the Expo exciting for both participants relatives and everybody else who would like to see the Expo Se the overview of all the stalls HERE
ANS: But Marathon Sport and Nike are not alone in making the Expo exciting for both participants, relatives and everybody else who would like to see the Expo. Se the overview of all the stalls HERE

QUESTION: Fix punctuation: A cerebrospinal fluid tap is another common diagnostic method used to confirm parasitic infection however the tap may yield normal results despite encephalitis
ANS: A cerebrospinal fluid tap is another common diagnostic method used to confirm parasitic infection; however, the tap may yield normal results despite encephalitis.

QUESTION: Fix punctuation: Need a car for rental in Tallinn Want to hire a car to move around the capital as quickly as possible  It is the right solution
ANS: Need a car for rental in Tallinn? Want to hire a car to move around the capital as quickly as possible? – It is the right solution.

QUESTION: Fix punctuation: Boat S 1 was commissioned on 15121955 as Storm Gull under EG Mller
ANS:
Boat "S 1" was commissioned on 15.12.1955 as "Storm Gull" under E.G. Müller.