Assertion: proton's value | /r/HasProperty | required
Facets:
value: in order to have four increments of 1
type: PURPOSE
Source sentences:
text: Hence, in order to have four increments of 1, an isospin value of ​3⁄ 2 is required (giving the projections I 3 = ​3⁄ 2 , ​1⁄ 2 , −​1⁄ 2 , −​3⁄ 2 ).