What does "relating factor" mean

Question

The Bridge Map:

The Bridge Map gives you a tool for applying the process of seeing analogies,and answers the question, “What is the guiding metaphor?” On the line to the far left, write the relating factor. On the top and bottom of the left side of the bridge, write the first pair of things that have this relationship. On the right side of the bridge, write the second pair of relationships that have the same relationship. The line of the bridge represents the relating factor that is “bridged over”from one side of the analogy to the other.

Answer 1

relating factor

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