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 ▢

Distractor grid 1:

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

Distractor grid 2:

▢ 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 a vertical column of X's in the fourth column.
assistant
Expression: The target grid has more empty cells than either of the distractor grids, with 15 empty cells compared to 6 and 9 respectively in the distractor grids. Additionally, there are no consecutive rows or columns with all X's in the target grid, while both distractor grids have at least one such row or column. The target grid also has a higher degree of variability, as it contains more unique cell combinations compared to the other grids. Over
assistant