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

<answer>(0, 2)</answer>