彼ら, 彼等, かれら
Pronoun, usu. in ref. to males or a mixed-sex group
they, them
間もなく彼らは結婚します。
あれら, 彼等, 彼ら
Pronoun, See あれ・1, Usually in kana, indicating things distant from both speaker and listener, or things understood without naming them directly
1. those, they
Archaism, used to refer to one's equals or inferiors
2. they (of people)
は
Particle, pronounced わ in modern Japanese
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis