QUESTION: Fix punctuation: After returning to Moscow he spoke before the Society of Friends of the Natural Sciences The most important invention of recent years in the area of aviation is the flying machine of the German engineer Otto Lilienthal
ANS: After returning to Moscow, he spoke before the Society of Friends of the Natural Sciences: "The most important invention of recent years in the area of aviation is the flying machine of the German engineer Otto Lilienthal.

QUESTION: Fix punctuation: In seconds you will learn exactly what type of U2 file you have the software program associated with your file the publisher who created it its security safety status and a variety of other useful information
ANS: In seconds, you will learn exactly what type of U2 file you have, the software program associated with your file, the publisher who created it, its security safety status, and a variety of other useful information.

QUESTION: Fix punctuation: 423 And Josephs ten brethren went down to buy corn in Egypt
ANS: 42:3 And Joseph's ten brethren went down to buy corn in Egypt.

QUESTION: Fix punctuation: rideCam lets you experience first hand the thrills of every roller coaster and carnival ride
ANS:
"ride-Cam" lets you experience first hand the thrills of every roller coaster and carnival ride.