There are 6 shapes on a 5x5 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 (2, 2)
Distance from target shape to brown rectangle at (1, 1): 2
Distance from target shape to blue trapezoid at (4, 0): 4
Distance from target shape to orange square at (3, 0): 3
Distance from target shape to gray rectangle at (1, 3): 2
Distance from target shape to cyan rectangle at (0, 1): 3
Closest shape is the brown rectangle at (1, 1) with distance 2</think>

<answer>(1, 1)</answer>