There are 6 shapes on a 6x6 grid. Which shape is closest to the cyan rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: cyan rectangle at (1, 4)
Distance from target shape to blue square at (3, 0): 6
Distance from target shape to green trapezoid at (2, 5): 2
Distance from target shape to purple right_triangle at (3, 2): 4
Distance from target shape to red right_triangle at (2, 2): 3
Distance from target shape to brown trapezoid at (5, 2): 6
Closest shape is the green trapezoid at (2, 5) with distance 2</think>

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