Datasets:
| The input contains 5 blocks in 2 stacks. From left to right: | |
| - Stack 1 has 2 level. From bottom to top: level 1 has an blue block, level 2 has an yellow block, | |
| - Stack 2 has 3 level. From bottom to top: level 1 has an green block, level 2 has an orange block, level 3 has an purple block, | |
| As such, for the question "What is the color of the block at stack 1, level 2?", the correct answer is "<Output> yellow". | |
| <Output> yellow |