Please explain

6.4.1 Concept question: What is the original directed network ( draw or describe ) that has a cocitation matrix given by: 70 4 4 4 4 4) 4_0_4 4 4 4 4_4_0_4 4 4 4 4 4_0_4_4 4 4 4 4_0_4 [4 4 4 4 4_0/