Structural Ambiguity is basically a question of "what goes with what" in a sentence: it occurs when the constituents (i.e. the elements of sentence structure) can relate to each other in different ways, even though none of the individual words in the
sentence may be ambiguous.
Here are two interpretations of the Noun Phrase [very old men and women] (pictured above, as 'interpretation 0') which can be represented using simplified constituent analysis:
NP[very old [men and women]] >> Both men and women are old.
NP[[very old men] and [women]] >> The men are old, the women can be of any age.
