When it reaches 70, the water vapor will begin condensing into fog or dew and such condensation releases heat.
(it; reaches; 70) (the water vapor; will begin; T:When it reaches 70) (the water vapor; condensing; into fog or dew and such condensation releases heat)
it the water vapor the water vapor
reaches will begin condensing
70
T:When it reaches 70
into fog or dew and such condensation releases heat