There are 5 shapes on a 9x9 grid. Which shape is closest to the red 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: red trapezoid at (4, 6)
Distance from target shape to brown right_triangle at (8, 5): 5
Distance from target shape to purple square at (0, 5): 5
Distance from target shape to green rectangle at (0, 4): 6
Distance from target shape to yellow rectangle at (2, 4): 4
Closest shape is the yellow rectangle at (2, 4) with distance 4</think>

<answer>(2, 4)</answer>