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

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