Misc: Ethylene glycol is frequently used in automobiles?

Questions

he was the first man to run the mile in less than four minutes?

what gate does the three-headed dog cerberus guard?

what's the only dog which doesn't have a pink tongue?

what ship bears the identification number ncc 1701?

what did ira remsen discover in 1879, perhaps proclaiming 'how sweet it is'?