Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Attempts to submit his opponent does not imply to demonstrate techniques.
 The question and answer:
Can we conclude from "A man in a white martial arts robe attempts to submit his opponent wearing a blue robe." that "Two men demonstrate martial arts techniques."?
Options:
- yes
- no
- it is not possible to tell
The answer is it is not possible to tell