给出一组英语句子，要求GPT模型将句子进行自然语言处理（如词性标注、命名实体识别等），并输出处理后的结果。


“Three rings for the Elven-kings under the sky,”
Part-of-speech tagging and named entity recognition results for the given sentence:
 
Three: cardinal numeral
rings: noun, plural
for: preposition
the: definite article
Elven-kings: proper noun, plural
under: preposition
the: definite article
sky: noun 

There are no named entities in this sentence.