what nationality
「何人」 has other readings with different meanings.
あの選手は何人ですか。
What nationality is that athlete?
何人であっても文化の違いを尊重すべきだ。
Regardless of nationality, one should respect cultural differences.
留学生に何人か聞かれたが答えに困った。
An exchange student asked me my nationality and I was at a loss for words.