Task: Question Answering
Input (English): Passage: Cummingtonite -- Cummingtonite is a metamorphic amphibole with the chemical composition (Mg,Fe)(Mg,Fe)SiO(OH), magnesium iron silicate hydroxide.
Question: are you (mg fe2+)2(mg fe2+)5si8o22(oh)2
Output (English): 0