The important point is not whether one line of code can be considered an implementation of Lisp; it is to recognize common patterns of computation. Both el i za and 1 i sp can be seen as interactive interpreters that read some input, transform or evaluate the input in some way, print the result, and then go back for more input. We can extract the following common pattern:

(defun program ( 1

(1 oop

( p r i n t prompt)

( p r i n t (transform ( r e a d ) 1) 1)