[Hanako kara [ sigoto-o yameru toyuu] uwasa-o kiita hito]-ga  atta no-wa dare-ni desu ka ?
Hanako from  job-ACC quits COMP rumor-ACC heard person-NOM  saw NL-TOP who-DAT COP Q
Who was it that the person who heard from Hanako the rumor that pg would quit his job saw t?