x1 (property of x2) is a stereotype of x2 (object/set), held by x3
Does not necessarily carry a negative connotation. Stereotypes are, basically, the characteristics that come to one's mind when they imagine a particular object, regardless of actual commonality. e.g. Many people stereotypically think of roses as red, even though there are plenty of roses that aren't red. See sei'i, lemkai, le'e