There are 4 shapes on a 6x6 grid. Which shape is closest to the yellow square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow square at (0, 2)
Distance from target shape to red right_triangle at (5, 0): 7
Distance from target shape to gray right_triangle at (4, 0): 6
Distance from target shape to orange right_triangle at (0, 5): 3
Closest shape is the orange right_triangle at (0, 5) with distance 3</think>

<answer>(0, 5)</answer>