Assertion: protein | /r/HasProperty | a building block
Facets:
value: often
type: TEMPORAL
value: in the body
type: LOCATION
Source sentences:
text: Protein is a building block that is necessary for life!
text: Proteins are the building blocks of life.
text: But protein is often referred to as a building block in the body because of its central role in growth and development.
text: In fact, proteins are often called the building blocks of life.