instruction:
In this task, we ask you to rewrite a sentence in simple English without changing its general meaning. Essentially, you want to make the sentence easier to read by using simpler words, utilizing more straightforward sentence structures, and omitting non-essential information etc.
question:
Users roll the ball to position the on-screen pointer , using their thumb , fingers , or commonly the palm of the hand while using the fingertips to press the mouse buttons .
answer:
The user rolls the ball with the thumb , fingers or the palm of the hand to move a cursor .


question:
The species most commonly referred to as " pigeon " is the species known by scientists as the rock dove , one subspecies of which , the domestic pigeon , is common in many cities as the feral pigeon .
answer:
The feral domestic pigeon is often called the " rock dove " : it is common in many cities .


question:
The ballad " Under the Bridge " was released as a second single , and went on to reach No. 2 on the " Billboard " Hot 100 chart , the highest the band has reached on that chart as of 2016 , and became one of the band 's most recognizable songs .
answer:

The second single , " Under the Bridge " , was the band 's most successful song ; it charted on the " Billboard " Hot 100 chart at number two .