There are 4 shapes on a 6x6 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 (2, 5)
Distance from target shape to cyan right_triangle at (4, 5): 2
Distance from target shape to brown rectangle at (4, 3): 4
Distance from target shape to green trapezoid at (5, 2): 6
Closest shape is the cyan right_triangle at (4, 5) with distance 2</think>

<answer>(4, 5)</answer>