There are 2 shapes on a 7x7 grid. Which shape is closest to the pink right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: pink right_triangle at (1, 4)
Distance from target shape to yellow trapezoid at (6, 0): 9
Closest shape is the yellow trapezoid at (6, 0) with distance 9</think>

<answer>(6, 0)</answer>