With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: David Jones (video game developer) is Latvian.
text_B: The Sony Ericsson K770i , was launched by 3 -LRB- in the UK -RRB- in 2008 in association with girl band Sugababes .. Sony Ericsson. Sony Ericsson. Hutchison 3G. Sugababes. Sugababes. It is a mid-range mobile phone , and successor to the -LRB- then -RRB- still manufactured K750 .. mobile phone. mobile phone. K750. Sony Ericsson K750. As of mid-2009 , it has not been directly succeeded in the Sony Ericsson model range , and the price has sustained at around # 100 -LRB- $ 190 -RRB- .. Sony Ericsson. Sony Ericsson. model range. Sony Ericsson#Previous systems
not_related.