# data[].attributes.headline
direct relationship between volume and temperature

# data[].attributes.subject
direct relationship between volume and temperature

# data[].attributes.headline
indirect relationship between pressure and volume

# data[].attributes.subject
indirect relationship between pressure and volume

# data[].attributes.headline
(temperature is constant) When the volume decreases, the pressure increases.

# data[].attributes.subject
(temperature is constant) When the volume decreases, the pressure increases.

# data[].attributes.body
(pressure is constant)
When temperature increases, volume increases