There are 4 shapes on a 9x9 grid. Which shape is closest to the blue trapezoid in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: blue trapezoid at (4, 3)
Distance from target shape to yellow square at (0, 4): 5
Distance from target shape to brown right_triangle at (7, 6): 6
Distance from target shape to cyan square at (0, 2): 5
Closest shape is the yellow square at (0, 4) with distance 5</think>

<answer>(0, 4)</answer>