 Xigashada Sawirka, Getty Images Qoraalka sawirka, Graphs can explain social relations, including those on Facebook, Grima says Waxa ugu horeeye ee xisaabtu i siisay waa is dhul dhigid, qabkaygii ayay si arxan darro ah iiga saartay sababta oo ah sidaan is moodayey ba maan ahayn. 