With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: WeChat is only an encryption app.
text_B: Lewis Henry Lapham -LRB- -LSB- ˈluːɪs ˈlæpəm -RSB- born January 8 , 1935 -RRB- is an American writer .. He was the editor of the American monthly Harper 's Magazine from 1976 until 1981 , and from 1983 until 2006 .. He is the founder of Lapham 's Quarterly , a quarterly publication about history and literature , and has written numerous books on politics and current affairs .
not_related.