Question: our second grandchild, her husband and our great-granddaughter spent christmas eve at the man's parents.
Answer: --> Our second grandchild, her husband and our great-granddaughter spent Christmas eve at the man's parents.

Question: this file format has powerful compression algorithm which is compatible with both macintosh and windows operating system. this format is developed by apple computer.
Answer: --> This file format has powerful compression algorithm which is compatible with both Macintosh and Windows operating system. This format is developed by Apple computer.

Question: but i saw none other of the apostles, but james the brother of the lord.
Answer:
--> but I saw none other of the apostles, but James the brother of the Lord.