Are all limbs required for jujutsu?
Rationale first then the answer.
Jujutsu is a Japanese martial art that uses unarmed combat to subdue opponents. Nick Newell, a congenital amputee, got his black belt after two straight submission wins. Fighter Aaron LaPointe has succeeded in martial arts with a fully paralyzed arm.. The answer is: no.

Did Van Gogh suffer from a mental disorder?
Rationale first then the answer.
Mental disorders can be characterized by psychotic episodes and delusions. Van Gogh suffered from psychotic episodes and delusions.. The answer is: yes.

Can you only see hippopotamus in Africa?
Rationale first then the answer.
The United States has several zoos featuring hippopotamus. In the UK, you can see hippopotamus at the Marwell Zoo.. The answer is: no.