(S (S (S (BASENP (DT The) (NN aircraft)) (VP (VP (VBD ventured) (PP (NP (BASENP (QP (RB about) (NN 4.5)) (NNS kilometers)) (PRN (LRB -LRB-) (BASENP (NN 3) (NNS miles)) (RRB -RRB-))) (PP (IN into) (NP (NP (BASENP (NNP Finland) (POS 's)) (NN airspace)) (PP (IN near) (BASENP (NNP Porvoo))))))) (PP (IN over) (NP (BASENP (DT a) (NN period)) (PP (IN of) (BASENP (NN three) (NNS minutes))))))) (COMMA ,) (PP (VBG according) (PP (TO to) (NP (BASENP (NNP Finland) (POS 's)) (BASENP (NN defense) (NN ministry)))))) (PERIOD .))