Context: Maybe it was because I was at a book sale at Mac today , and it spurred memories of browsing through clearance books at the Carleton bookstore ( their clearance section had quite a few art books and I used to be excited by the books I acquired . Meanwhile , I 'd been looking forward to the book sale but was mostly disappointed by the selection . I did walk away with two art books though -- Face and Installation Art In The New Millenium , which made me happy enough ) .

Question: What type of books do I like ?
Options:
0. I like books on the moon landing .
1. I like books on art .
2. None of the above choices .
3. I like books in my library .
Answer: 1

Question: What type of books do I like ?
Options:
0. I like books on sale .
1. I like books in my library .
2. None of the above choices .
3. I like books on the moon landing .
Answer: 0

Question: Why did I end up happy in the end ?
Options:
0. None of the above choices .
1. I was able to buy a book on art .
2. I was able to buy a book on memories .
3. I was able to buy a book on animals .
Answer: 1

Question: Why did I end up happy in the end ?
Options:
0. I was able to buy a book on animals .
1. I was able to buy a book on memories .
2. I was able to buy a book on clearance .
3. None of the above choices .
Answer: 2