You are given three grids, where each of them is 5 by 5 in size.
Grids have empty cells marked with "▢" and filled cells marked with "X".
Your task is to generate a referring expression that best describes the target grid while distinguishing it from the two other distractor grids.
The first grid is the target grid, and the following two grids are the distractors.

Target grid:

X ▢ X ▢ ▢
▢ X ▢ ▢ ▢
X ▢ X ▢ X
▢ ▢ X X ▢
▢ ▢ X X ▢

Distractor grid 1:

X X X X ▢
▢ ▢ ▢ ▢ ▢
X ▢ X ▢ X
▢ ▢ ▢ ▢ X
▢ ▢ ▢ X X

Distractor grid 2:

X X ▢ ▢ ▢
▢ X ▢ ▢ X
X ▢ X ▢ ▢
X X ▢ ▢ ▢
▢ X X ▢ ▢

Instruction: Describe the target grid.
Generate the referring expression starting with the tag "Expression: " for the given target grid. Omit any other text.
Expression: The grid with two X's in the top left and top right corners of the first row, an X in the middle of the second row, two X's in the middle and rightmost columns of the third row, and two X's in the bottom right corner of the fourth and fifth rows.||
assistant
Expression: The target grid has more X-shaped cells than either of the distractor grids, particularly in the upper left and lower right corners where there are three consecutive X-shaped cells. Additionally, it has fewer empty cells compared to the distractor grids. In particular, the target grid has no empty cell in its center, while both distractor grids have an empty cell in their centers. The target grid's unique feature is that it has a row of three
assistant