Question: Mickaël-Méba Zeze broke the French Youth Record for the 200m dash formerly held by the first white man to break 10 seconds in the 100m, when he did so in what year?
Sentence (from "Nuclear isomer"): "Metastable" refers to the property of these nuclei whose excited states have half-lives longer than 100 to 1000 times the half-lives of the excited nuclear states that decay with a "prompt" half life (ordinarily on the order of 10 seconds).
Relevant evidence: No