A traffic signal is alerting those wanting to go left to proceed while those wanting to go straight must stop.
a traffic signal is working
If "A traffic signal is alerting those wanting to go left to proceed while those wanting to go straight must stop.", does it logically follow that "a traffic signal is working"?

Options: 

 - yes

 - it is not possible to tell

 - no
yes
If "A traffic signal is alerting those wanting to go left to proceed while those wanting to go straight must stop.", does it logically follow that "a traffic signal is working"?

Options: 

 - yes

 - it is not possible to tell

 - no
user
yes
assistant