There are 5 shapes on a 6x6 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, 4)
Distance from target shape to orange square at (5, 3): 2
Distance from target shape to red trapezoid at (3, 4): 1
Distance from target shape to cyan square at (4, 5): 1
Distance from target shape to blue right_triangle at (4, 3): 1
Closest shape is the red trapezoid at (3, 4) with distance 1</think>

<answer>(3, 4)</answer>