Water is the only substance that occurs at ordinary temperatures in all three phases: liquid, gas and solid.
(Water; is; the only substance that occurs at ordinary temperatures in all three phases: liquid, gas and solid) (the only substance; occurs; L:at ordinary temperatures in all three phases)
Water the only substance
is occurs
the only substance that occurs at ordinary temperatures in all three phases: liquid, gas and solid
L:at ordinary temperatures in all three phases