APL , PASCAL , and LISP these were helpful for programmers in understanding more without many problems . A tremendous change , which occurred in the programming of computer languages , was wino grads SHRDLU program , which was introduced in 1971 . This program language was LISP , which served as the language of intelligence for researchers of the United States . After some time , scientists conducted further researches in the development of natural language processing . In the end , they made significant progress when languages PROLOG and OPS5...











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