When I send the following java request:

HttpResponse<JsonNode> response = Unirest.post(“https://sentinelprojects-skyttle20.p.mashape.com/”)
.header(“X-Mashape-Key”, “<my mashup key>”)
.header(“Content-Type”, “application/x-www-form-urlencoded”)
.field(“annotate”, 1)
.field(“keywords”, “1”)
.field(“lang”, “de”)
.field(“sentiment”, “1”)
.field(“text”, rs.getString(3))
.asJson();

i get this answer:

{“docs”:[],“warnings”:[“Language <de> is not supported”]}

I tried with ru and fr as well:

{“docs”:[],“warnings”:[“Language <fr> is not supported”]}
{“docs”:[],“warnings”:[“Language <ru> is not supported”]}

English (en) is working.