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Using the line stack technique, we find statistically significant evidence of benzonitrile (C$_6$H$_5$CN) in L1495B, Lupus-1A, and L483 at levels of 31.8$\\,\\sigma$, 15.0$\\,\\sigma$, and 17.2$\\,\\sigma$, respectively, while there is no hint of C$_6$H$_5$CN in the fourth source, L1527. 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