A man is grinding his skateboard on a guard rail.
The man is a professional skateboarder.
Is it possible to conclude that "A man is grinding his skateboard on a guard rail." if "The man is a professional skateboarder."?

Options: 

 - yes

 - it is not possible to tell

 - no
it is not possible to tell
Is it possible to conclude that "A man is grinding his skateboard on a guard rail." if "The man is a professional skateboarder."?

Options: 

 - yes

 - it is not possible to tell

 - no
user
it is not possible to tell
assistant