There are 3 shapes on a 6x6 grid. Which shape is closest to the yellow rectangle 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 rectangle at (2, 0)
Distance from target shape to orange right_triangle at (3, 3): 4
Distance from target shape to gray right_triangle at (1, 4): 5
Closest shape is the orange right_triangle at (3, 3) with distance 4</think>

<answer>(3, 3)</answer>