( ( Since ( ( the courses ) ( are ( ( ( offered ( by ( many ( different organizations ) ) ) ) or ) ( developed ( by ( a ( single individual ) ) ) ) ) ) ) ) ( , ( ( ( the ( long-term availability ) ) ( of ( such courses ) ) ) ( ( ( are not ) assured ) . ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (DT the) (NNS courses)) (VP (VBP are) (VP (VP (VBN offered) (PP (IN by) (NP (JJ many) (JJ different) (NNS organizations)))) (CC or) (VP (VBN developed) (PP (IN by) (NP (DT a) (JJ single) (NN individual)))))))) (, ,) (NP (NP (DT the) (JJ long-term) (NN availability)) (PP (IN of) (NP (JJ such) (NNS courses)))) (VP (VBP are) (RB not) (ADJP (VBN assured))) (. .)))
Since the courses are offered by many different organizations or developed by a single individual, the long-term availability of such courses are not assured.
(ROOT (S (NP (NNP Individual)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT an) (NN organism)) (, ,) (CC or) (NP (JJ single) (VBG living) (NN thing)))))) (. .)))