The input contains 3 blocks in 3 stacks. From left to right:
- Stack 1 has 1 level.Level 1 has a red block.
- Stack 2 has 1 level.Level 1 has a orange block.
- Stack 3 has 1 level.Level 1 has a purple block.
As such, for the question "What is the color of the block at stack 3, level 1?", the correct answer is "<Output> purple".
<Output> purple