There are 6 shapes on a 5x5 grid. Which shape is closest to the blue square 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 square at (4, 0)
Distance from target shape to green rectangle at (0, 0): 4
Distance from target shape to cyan rectangle at (3, 2): 3
Distance from target shape to orange trapezoid at (1, 4): 7
Distance from target shape to purple square at (2, 4): 6
Distance from target shape to gray right_triangle at (2, 2): 4
Closest shape is the cyan rectangle at (3, 2) with distance 3</think>

<answer>(3, 2)</answer>