POST /sentiment
{"texts":["I loved this film, the acting was wonderful.","The service was slow and the food arrived cold."]}

HTTP 200
{
  "results" : [ {
    "label" : "POSITIVE",
    "score" : 0.9998835686297906
  }, {
    "label" : "NEGATIVE",
    "score" : 0.9997554818864473
  } ]
}

Empty list: HTTP 400
65 texts (limit is 64): HTTP 400
