(S (S (PP (IN On) (BASENP (NNP Friday) (NN morning))) (COMMA ,) (S (BASENP (NNP Finland)) (VP (VP (VBD scrambled) (BASENP (DT an) (NNP F-18) (NNP Hornet) (NN fighter) (NN jet))) (S (VP (TO to) (VP (VB intercept) (NP (BASENP (DT a) (JJ Russian) (NNP Ilyushin) (NNP Il-76) (JJ strategic) (NN airlifter)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD had) (VP (VBN violated) (BASENP (JJ Finnish) (NN airspace))))))))))))) (PERIOD .))