There are 5 shapes on a 7x7 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 (2, 3)
Distance from target shape to cyan trapezoid at (6, 5): 6
Distance from target shape to yellow trapezoid at (5, 2): 4
Distance from target shape to blue rectangle at (4, 1): 4
Distance from target shape to gray right_triangle at (6, 3): 4
Closest shape is the yellow trapezoid at (5, 2) with distance 4</think>

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