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: he was considered by many to be a saint.

SOLUTION: he was thought by many to be a saint.

PROBLEM: hydra appears to be spectrally neutral like charon and nix , though pluto is reddish.

SOLUTION: the light particles passing through the atmosphere of hydra , seem to create no color , as is the case with the pluto 's other two moons , charon and nix , though pluto itself is reddish.

PROBLEM: functions may variously include sensing touch , air motion , heat , vibration -lrb- sound -rrb- , and especially olfaction -lrb- smell -rrb- or gustation -lrb- taste -rrb-.

SOLUTION:
functions may variously include sensing touch , air motion.