There are 3 shapes on a 7x7 grid. Which shape is closest to the gray 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: gray trapezoid at (6, 0)
Distance from target shape to orange right_triangle at (4, 3): 5
Distance from target shape to pink rectangle at (2, 5): 9
Closest shape is the orange right_triangle at (4, 3) with distance 5</think>

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