Add punctuation: King Henry IV has just been assassinated outside the Porte SaintJacques this entrance can be seen in the far right corner of the background
A: King Henry IV has just been assassinated outside the Porte Saint-Jacques (this entrance can be seen in the far, right corner of the background).

Add punctuation: You can also browse our range of small jewellery bags
A: You can also browse our range of small jewellery bags.

Add punctuation: Acrobatic gymnastics is a competetive sport involving gymnastics and acrobatics that is choreographed and rated by judges
A:
Acrobatic gymnastics is a competetive sport involving gymnastics and acrobatics that is choreographed and rated by judges.