With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tesla Motors was the former name of Tesla, Inc.
text_B: A tip of the day is a piece of advice that is given daily .. For example , many computer programs , such as those in older versions of the Microsoft Office suite , will display a tip of the day when they are started .. Microsoft Office. Microsoft Office
not_related.