TASK DEFINITION: In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
PROBLEM: although she had previously spoken in fantasies and dream sequences , maggie 's first word spoken in the normal continuity of the series occurred in " lisa 's first word " , when she was voiced by elizabeth taylor.

SOLUTION: though maggie had previously spoken in fantasies and dream sequences , her first word spoken in the normal mode of the series occurred in " liza 's first word " , when she was given sound by elizabeth taylor.

PROBLEM: further , the term " the celsius or centigrade thermometer " was again used in reference to a particular type of thermometer at least as early as 1850.

SOLUTION: moreover , the term " celsius or centrigrade thermometer " was again used in reference to a special type of thermometer at least as early as 1850.

PROBLEM: the quark model was independently proposed by physicists murray gell-mann and george zweig in 1964.

SOLUTION:
the quark model was proposed seperately by two different physicists , murray gell-mann and george zweig , in 1964.