With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Silicon Valley is outside a populous region.
text_B: Khalid Alvi -LRB- born 20 December 1957 -RRB- is a Pakistani former cricketer .. He played 59 first-class cricket matches for several domestic teams in Pakistan between 1971 and 1986 .. cricket. cricket. first-class cricket. first-class cricket
not_related.