There are 5 shapes on a 10x10 grid. Which shape is closest to the green 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: green trapezoid at (4, 9)
Distance from target shape to red rectangle at (6, 0): 11
Distance from target shape to brown rectangle at (3, 1): 9
Distance from target shape to cyan rectangle at (8, 8): 5
Distance from target shape to blue square at (8, 6): 7
Closest shape is the cyan rectangle at (8, 8) with distance 5</think>

<answer>(8, 8)</answer>