sentences: thermometer is when tin chemically reacts with land and space
docs: tin_iv_ion is variable_charge_cation. fahrenheit_thermometer is thermometer. one_of_chemical_elements is tin. mercury_thermometer is thermometer. tin_iv_ion is tin_atom. tin_ii_ion is variable_charge_cation. tin_ii_ion is atomic_ion. gas_thermometer is thermometer. flux is chemical. tin_ii_ion is tin_atom.