Assertion: skim milk's fat | /r/HasProperty | main energy source
Facets:
value: in their diet
type: LOCATION
Source sentences:
text: Fats are a concentrated energy source and are the main energy source used by the body during low intensity activities and prolonged exercise over 90 minutes.
text: People following such diets consume between 20 and 50 grams of carbohydrates per day, which means that fat is the main macronutrient in their diet.