There are 3 shapes on a 9x9 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 (4, 0)
Distance from target shape to cyan trapezoid at (7, 4): 7
Distance from target shape to blue square at (3, 6): 7
Closest shape is the cyan trapezoid at (7, 4) with distance 7</think>

<answer>(7, 4)</answer>