Sometimes you can find this easily; the author says something like “the point of this article is to” or “in this paper I intend to show/argue that.” Sometimes you have to look for a simple statement that contains some echo of the title, the same phrase or words, and some brief statements of the argument that support the assertion: “despite what other scholars have said, I think this [whatever it is] is actually the case, because I have found this [supporting point #1], this [supporting point #2], and this [supporting point #3].”
If the paper is well-crafted, the section headings of the paper (when there are any) will contain some allusion to the supporting points.