Assertion: proton's value | /r/CapableOf | give projection
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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 ).