There are 6 shapes on a 5x5 grid. Which shape is closest to the pink 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: pink right_triangle at (0, 2)
Distance from target shape to red rectangle at (4, 2): 4
Distance from target shape to brown square at (3, 4): 5
Distance from target shape to gray rectangle at (0, 1): 1
Distance from target shape to orange right_triangle at (4, 1): 5
Distance from target shape to yellow right_triangle at (2, 4): 4
Closest shape is the gray rectangle at (0, 1) with distance 1</think>

<answer>(0, 1)</answer>