There are 6 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 (2, 0)
Distance from target shape to green square at (6, 1): 5
Distance from target shape to pink square at (5, 5): 8
Distance from target shape to purple rectangle at (3, 4): 5
Distance from target shape to brown trapezoid at (4, 5): 7
Distance from target shape to blue right_triangle at (0, 0): 2
Closest shape is the blue right_triangle at (0, 0) with distance 2</think>

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