Acids taste sour and they will react with some metals to give off hydrogen gas.
(Acids; taste sour; ) (they; will react; with some metals; to give off hydrogen gas) Context(they will react,List([21, 36))):(they; will react with some metals to give off; hydrogen gas)
they will react,List([21, 36))
Acids they they
taste sour will react will react with some metals to give off
with some metals to give off hydrogen gas
hydrogen gas