There are 5 shapes on a 7x7 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 (4, 4)
Distance from target shape to orange right_triangle at (2, 1): 5
Distance from target shape to blue right_triangle at (5, 4): 1
Distance from target shape to pink right_triangle at (1, 3): 4
Distance from target shape to brown rectangle at (3, 4): 1
Closest shape is the blue right_triangle at (5, 4) with distance 1</think>

<answer>(5, 4)</answer>