There are 5 shapes on a 10x10 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, 4)
Distance from target shape to red square at (3, 6): 3
Distance from target shape to cyan square at (5, 3): 2
Distance from target shape to orange right_triangle at (1, 9): 8
Distance from target shape to purple right_triangle at (2, 6): 4
Closest shape is the cyan square at (5, 3) with distance 2</think>

<answer>(5, 3)</answer>