claim: Charles de Gaulle worked for the President of the Fifth French Republic.
evidence: A hexafluoride is a chemical compound with the general formula QXnF6 , QXnF6m − , or QXnF6m + .. Many molecules fit this formula .. An important hexafluoride is hexafluorosilicic acid -LRB- H2SiF6 -RRB- , which is a byproduct of the mining of phosphate rock .. hexafluorosilicic acid. hexafluorosilicic acid. phosphate rock. phosphate rock. In the nuclear industry , uranium hexafluoride -LRB- UF6 -RRB- is an important intermediate in the purification of this element .. nuclear industry. nuclear industry. uranium hexafluoride. uranium hexafluoride