There are 4 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 (1, 4)
Distance from target shape to red right_triangle at (1, 1): 3
Distance from target shape to cyan rectangle at (0, 0): 5
Distance from target shape to blue trapezoid at (0, 4): 1
Closest shape is the blue trapezoid at (0, 4) with distance 1</think>

<answer>(0, 4)</answer>