If you were to weigh each one of these items on average, what would be considered heavy and light if you were to carry them: boulder, pebble, feather, bowling ball, elephant, seed, sand, dirt, water, books, papers, backpack
heavy: boulder, bowling ball, elephant, sand, dirt, water, backpack
light: feather, seed, books, papers
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: If you were to weigh each one of these items on average, what would be considered heavy and light if you were to carry them: boulder, pebble, feather, bowling ball, elephant, seed, sand, dirt, water, books, papers, backpack
### Input: 
### Response: heavy: boulder, bowling ball, elephant, sand, dirt, water, backpack
light: feather, seed, books, papers