There are 2 shapes on a 8x8 grid. Which shape is closest to the orange 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: orange trapezoid at (6, 1)
Distance from target shape to gray right_triangle at (5, 1): 1
Closest shape is the gray right_triangle at (5, 1) with distance 1</think>

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