Qenya
mane
pronoun. who
mane hion
which (of them)
mane meon
which of us
mane sanion
*which of them (previously referred to)
mane tano
who is that man
mane tare
who is that woman
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.