The conversation between human and AI assistant.
[|Human|] From the passage list down the materials used to prepare boomerang. List the results in comma separated format.
[|AI|] wood, bone, horn, tusks, iron, plywood, plastics such as ABS, polypropylene, phenolic paper, carbon fibre-reinforced plastics
[|Human|] 
From the passage list down the materials used to prepare boomerang. List the results in comma separated format.