Two rectangular gardens exist within a society such that the smaller garden is enclosed by the larger garden. Each garden has four gates located at th...

Two rectangular gardens exist within a society such that the smaller garden is enclosed by the larger garden. Each garden has four gates located at the midpoint of each side. The gates of the smaller garden open outward, while the gates of the larger garden open inward. Gates of the smaller garden face the gates of the larger garden, and only gates from different gardens face each other.

Given the following conditions:

• Gate U of the smaller garden is second to the right of gate T.
• The gate facing T is immediately to the right of gate N.
• The number of gates between U and T is one less than the number of gates between P and M.
• Gate M is not adjacent to gate N.
• Gate O faces the gate immediately to the right of gate R.
• Gate R does not face gate N.
• Gate O is not located on the longer side of the garden.
• One of the gates is S.

Four of the following five gates are similar in a certain way and form a group. Which gate does not belong to this group?