a skateboarder grinds a rail.
A skateboarder is wearing a helmet.
If "a skateboarder grinds a rail.", can we conclude "A skateboarder is wearing a helmet."?

Options: 

 - yes

 - it is not possible to tell

 - no
it is not possible to tell
If "a skateboarder grinds a rail.", can we conclude "A skateboarder is wearing a helmet."?

Options: 

 - yes

 - it is not possible to tell

 - no
user
it is not possible to tell
assistant