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Use "unknowables" in a sentence
"There aren't as many "unknowables" here as you claim there are."
"In fact, Spencer calmly affirms the identity of the two "unknowables" of"
"It's a story about many stories: friendships, rivalries, nationhood, the undesirability of old age, the quantification of genius and other "unknowables", like how much love do you need in a lifetime, and is sport really greater than life?"