There are 6 shapes on a 10x10 grid. Which shape is closest to the red 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: red trapezoid at (1, 6)
Distance from target shape to cyan trapezoid at (7, 0): 12
Distance from target shape to purple rectangle at (6, 2): 9
Distance from target shape to gray rectangle at (1, 8): 2
Distance from target shape to yellow right_triangle at (1, 5): 1
Distance from target shape to green rectangle at (3, 4): 4
Closest shape is the yellow right_triangle at (1, 5) with distance 1</think>

<answer>(1, 5)</answer>