There are 4 shapes on a 4x4 grid. Which shape is closest to the yellow 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: yellow square at (0, 3)
Distance from target shape to cyan right_triangle at (2, 3): 2
Distance from target shape to gray square at (2, 2): 3
Distance from target shape to red square at (3, 2): 4
Closest shape is the cyan right_triangle at (2, 3) with distance 2</think>

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