QUESTION: Fix punctuation: People with access to melatonin can try to take 3 mg before bedtime
ANS: People with access to melatonin can try to take 3 mg. before bedtime.

QUESTION: Fix punctuation: The room is hot and sultry Next to us a lone Asian girl shares her adventures in the eternal city with some postcards
ANS: The room is hot and sultry. Next to us a lone Asian girl shares her adventures in the eternal city with some postcards.

QUESTION: Fix punctuation: Stefans research combines advanced mathematics statistics and computer science to develop new tools to analyze complicated datatypes for example the shape of organs datatypes which generally are nonlinear
ANS: Stefans research combines advanced mathematics, statistics and computer science to develop new tools to analyze complicated datatypes, for example the shape of organs datatypes which generally are nonlinear.

QUESTION: Fix punctuation: In the human kingdom the kingdom of wisdom and the divine world of the spiral cycle each of these same living beings constitutes a finished human being in Gods image after his likeness
ANS:
In the human kingdom, the kingdom of wisdom and the divine world of the spiral cycle each of these same living beings constitutes a finished human being in God's image after his likeness.