(S (S (PP (IN In) (NP (BASENP (NN addition)) (PP (TO to) (BASENP (NNS wheelchairs))))) (COMMA ,) (S (BASENP (DT the) (NNS workshops)) (VP (VBP handle) (NP (NP (BASENP (DT all) (NN manner)) (PP (IN of) (BASENP (NN work)))) (PP (IN with) (BASENP (NNS prostheses))))))) (PERIOD .))