There's a person named Khushwant Singh in a story. He and his grandmother are friends.
There's a question asked in my book: What is the 'turning point' in the story?
And my answer begins something like this:
'The turning point' in the lesson refers to the turning point in Khushwant Singh's and his grandmother's friendship.
Now here's where I get confused. Did I use the apostrophes properly? If I didn't use it properly, how should I use it properly?