There are 5 shapes on a 10x10 grid. Which shape is closest to the cyan 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: cyan trapezoid at (8, 3)
Distance from target shape to blue square at (8, 0): 3
Distance from target shape to gray right_triangle at (5, 3): 3
Distance from target shape to pink right_triangle at (9, 4): 2
Distance from target shape to yellow rectangle at (9, 7): 5
Closest shape is the pink right_triangle at (9, 4) with distance 2</think>

<answer>(9, 4)</answer>