Task: Text Simplification
Input (English): 1979 to 1999 the jubilee line of 1979 was to be the first of four phases of the project , but lack of funds meant that no further progress was made until the late 1990s.
Output (English): from 1979 to 1999 , the jubilee line of 1979 was to be the first of four parts of the project , but due to lack of money , it meant that no more progress was made until the late 1990s.