There are 5 shapes on a 6x6 grid. Which shape is closest to the purple right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: purple right_triangle at (1, 2)
Distance from target shape to orange square at (4, 4): 5
Distance from target shape to brown trapezoid at (0, 3): 2
Distance from target shape to gray rectangle at (5, 1): 5
Distance from target shape to red right_triangle at (5, 5): 7
Closest shape is the brown trapezoid at (0, 3) with distance 2</think>

<answer>(0, 3)</answer>