There are 6 shapes on a 9x9 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 (4, 4)
Distance from target shape to brown rectangle at (2, 2): 4
Distance from target shape to red trapezoid at (8, 3): 5
Distance from target shape to cyan right_triangle at (7, 4): 3
Distance from target shape to gray square at (0, 7): 7
Distance from target shape to pink square at (0, 5): 5
Closest shape is the cyan right_triangle at (7, 4) with distance 3</think>

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