{"gt_parse": {"text_sequence": "to mas ter th e Manual of the US SR Aca de my of Scienc es; Manual o f Political Eco nomy by N ikitin; F oundations of Socialism i n Cuba by Blas Roca. Arenas graduated as an agricu ltural accountant, and described his sc hoolin g as .T he first time Arenas w as in Havana was in 196"}}