Premise: Carbon . Carbon is one of the few elements known since antiquity . Carbon is the 15th most abundant element in the Earth 's crust , and the fourth most abundant element in the universe by mass after hydrogen , helium , and oxygen . Carbon 's abundance , its unique diversity of organic compounds , and its unusual ability to form polymers at the temperatures commonly encountered on Earth enables this element to serve as a common element of all known life .
Hypothesis: Carbon is an element.
Label: ENTAILMENT