With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Star Search had a relaunch from 2003-04.
text_B: Nir Barkat -LRB- ; born 19 October 1959 -RRB- is an Israeli businessman , entrepreneur , philanthropist , and politician .. He was first elected mayor of Jerusalem in 2008 and was re-elected for a second term in 2013 .. Jerusalem. Jerusalem. mayor of Jerusalem. mayor of Jerusalem. During his tenure , Barkat has `` embrac -LSB- ed -RSB- new data-driven tools in hopes of improving life for all of his constituents , '' working to enhance culture , promote tourism , address social welfare issues , encourage the development of local high-tech , and provide opportunities for the ultra-Orthodox and Arab communities in Jerusalem .. Jerusalem. Jerusalem. culture. Culture of Israel. tourism. Tourism in Israel
not_related.