A guard is on the look out while on duty.
Someone is keeping guard.
If "A guard is on the look out while on duty.", does it logically follow that "Someone is keeping guard."?

Options: 

 - yes

 - it is not possible to tell

 - no
yes
If "A guard is on the look out while on duty.", does it logically follow that "Someone is keeping guard."?

Options: 

 - yes

 - it is not possible to tell

 - no
user
yes
assistant