Context: That was the first thing I wondered when I realized that he was n't joking . " He gazed at Goku again . " I suppose I 'll level with you ; we all know that Sanzo has not been himself lately . "

Question: What do we know about Sanzo ?
Options:
0. People are concerned about him .
1. He is the same as always .
2. He is joking .
3. He is their friend .
Answer: 0