Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Example Input: level, smooth, flat, lined, elevation
Example Output: level

Example Input: crane, pelican, egret, hummingbird, upraise
Example Output: upraise

Example Input: emotional supports, fret, truss rod, notes, output cord
Example Output:
emotional supports