There are 6 shapes on a 5x5 grid. Which shape is closest to the blue 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: blue trapezoid at (1, 3)
Distance from target shape to yellow trapezoid at (1, 0): 3
Distance from target shape to pink trapezoid at (2, 0): 4
Distance from target shape to brown right_triangle at (0, 1): 3
Distance from target shape to orange trapezoid at (4, 2): 4
Distance from target shape to green right_triangle at (4, 4): 4
Closest shape is the yellow trapezoid at (1, 0) with distance 3</think>

<answer>(1, 0)</answer>