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Use "commentating" in a sentence
"Both girls have received a broadcast good luck message from Victoria Shaw, Australia's - possibly the world's - only female race-caller, who has made her name commentating on 'picnic races' at country tracks, the lowest tier of Australian racing."
"By the way – and here my real motive for commentating is revealed in all its shamelessness (yes, I, too, have my own agenda!) – would you like to like to my own staggeringly good blog?"
"It's just kind of commentating on absurdities and human behavior."