human
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
At a picnic, Mary brings a basket with 10 sandwiches and sets it on the table. She goes to play frisbee with some friends, leaving John and Steve at the table. John eats two sandwiches and hides the wrappers in his backpack. Steve sees this and decides to make two more sandwiches to replace the eaten ones. When Mary returns, how many sandwiches does she think are left in the basket, and what do John and Steve know about the changes?

Make your response very short.

### Response:
gpt
Mary thinks there are still 10 sandwiches left in the basket because when she left, there were 10 sandwiches, and she has no information about what transpired while she was away. John knows that there are actually 10 sandwiches in the basket because he ate two but then Steve replaced them. Steve also knows that there are 10 sandwiches because he made two more to compensate for the ones John ate.