There are 4 shapes on a 5x5 grid. Which shape is closest to the yellow rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow rectangle at (1, 3)
Distance from target shape to orange trapezoid at (3, 4): 3
Distance from target shape to pink right_triangle at (4, 4): 4
Distance from target shape to cyan square at (1, 1): 2
Closest shape is the cyan square at (1, 1) with distance 2</think>

<answer>(1, 1)</answer>