LONDON (ShareCast) - (ShareCast News) - Chemicals group Elementis (LSE: ELM.L - news ) saw its first half pre-tax profit decline, as its oil and gas related and businesses reported a drop in sales.
Take context from the input text and decide on the accurate relationship between 'Elementis' and 'LONDON' from the options provided.
Options: distributed by, publisher, headquarters location, developer