func calculateEmbedding(word: String) {
   if let embeddings = NLEmbedding.wordEmbedding(for: .english) {
      if embeddings.contains(word) {
         let listWords = embeddings.neighbors(for: word, maximumCount: 5)
         message = ""
         for (word, distance) in listWords {
            message += "\(word.capitalized): \(distance)\n"
         }
      }
   }
}