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

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