What is the relationship between 'Carlos Ghosn' and 'Nissan' in the context of the input sentence.
Options: position held, owned by, employer, currency

However last week’s announcement saw claims that chief executive Carlos Ghosn had been "scaremongering" when he warned that the prospect of Britain leaving the EU or renegotiating its membership terms would cause Nissan to “reconsider” its investments in the UK.
employer