Using explode

 
Array
(
    [0] => PARC
    [1] => (Palo
    [2] => Alto
    [3] => Research
    [4] => Center)
    [5] => was
    [6] => one
    [7] => of
    [8] => the
    [9] => single
    [10] => most
    [11] => important
    [12] => hubs
    [13] => of
    [14] => invention
    [15] => for
    [16] => modern
    [17] => computing
)