There are 4 shapes on a 7x7 grid. Which shape is closest to the purple 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: purple trapezoid at (4, 3)
Distance from target shape to cyan right_triangle at (2, 2): 3
Distance from target shape to yellow right_triangle at (5, 5): 3
Distance from target shape to brown square at (5, 2): 2
Closest shape is the brown square at (5, 2) with distance 2</think>

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