(S (S (BASENP (NNP Autodesk)) (VP (VBZ is) (NP (BASENP (DT the) (NN creator)) (PP (IN of) (NP (NP (BASENP (NN one)) (PP (IN of) (BASENP (DT the) (JJ top) (ADJP (NN computer) (VBN aided)) (NN design) (NNS programs)))) (COLON ;) (NP (BASENP (NNP AutoCAD)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (VP (VP (VBN used) (PP (IN by) (BASENP (JJ many) (NNS engineers) (CC and) (NNS architects)))) (PP (IN for) (NP (BASENP (NN design) (NNS activities)) (PP (VBG including) (BASENP (NN drafting))))))))))))))) (PERIOD .))