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 ▢ ▢ ▢ X
X X X X X

Distractor grid 1:

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

Distractor grid 2:

X X ▢ X X
X X ▢ 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 target grid has a unique pattern of filled and empty cells, distinguished by the presence of a single row of filled cells in the second row and a single column of filled cells in the third row.
assistant
Expression: The grid with five Xs in the first row, last row, and all columns, and three Xs in the remaining rows.

The target grid has a unique pattern of Xs and empty cells that distinguishes it from the two distractor grids. The target grid has five Xs in the first row, last row, and all columns, and three Xs in the remaining rows. Distractor grid 1 has a pattern of five Xs in the
assistant