There are 6 shapes on a 6x6 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 (5, 4)
Distance from target shape to gray trapezoid at (0, 5): 6
Distance from target shape to orange right_triangle at (1, 0): 8
Distance from target shape to green trapezoid at (4, 0): 5
Distance from target shape to cyan right_triangle at (3, 2): 4
Distance from target shape to blue trapezoid at (5, 2): 2
Closest shape is the blue trapezoid at (5, 2) with distance 2</think>

<answer>(5, 2)</answer>