Which of these are contact sports - hockey, badminton, tennis, grid iron football
hockey and  grid iron football are contact sports
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: Which of these are contact sports - hockey, badminton, tennis, grid iron football
### Input: 
### Response: hockey and  grid iron football are contact sports