2. (I) think (that); (I) have a feeling (that)
at sentence end; short for ような気がする
その話、前にも聞いたような。I feel like I've heard that story before.
3. feels like; feels similar to; feels as if
at sentence end; short for ような感じ(がする)
不思議と懐かしいような。Strangely, it feels kind of nostalgic.