Question: on the other hand, the lives of american professors dr bill fredman, head of department, and dr john graham and his black girlfriend, carol, vary greatly.
Answer: --> On the other hand, the lives of American professors Dr Bill Fredman, head of department, and Dr John Graham and his black girlfriend, Carol, vary greatly.

Question: do not use unreliable compression technique or file conversion mechanism
Answer: --> Do not use unreliable compression technique or file conversion mechanism

Question: she rode the cock in her ass and got it in numerous other positions too.
Answer:
--> She rode the cock in her ass and got it in numerous other positions too.