On a gravel bike ride, categorize which of these items are 'useful', 'not useful', 'dangerous', or ,'neither': shovel, spare tire, clock, horn, water bottle, gps, knife, snake
shovel = not useful
spare tire = useful
clock = neither
horn = useful
water bottle = useful
gps = useful
knife = useful
snake = dangerous
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: On a gravel bike ride, categorize which of these items are 'useful', 'not useful', 'dangerous', or ,'neither': shovel, spare tire, clock, horn, water bottle, gps, knife, snake
### Input: 
### Response: shovel = not useful
spare tire = useful
clock = neither
horn = useful
water bottle = useful
gps = useful
knife = useful
snake = dangerous