With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Thiokol became part of Thiokol Chemical Corporation.
text_B: `` Saving Grace '' is a song by American musician Tom Petty and is the lead track on his 2006 album , Highway Companion .. Tom Petty. Tom Petty. Highway Companion. Highway Companion. American. United States. musician. musician. album. album. In July 2006 , `` Saving Grace '' was released as the first radio single from the album .. album. album. single. single ( music ). The song , as well as its B-side `` Big Weekend , '' was released on July 4 , 2006 by the iTunes Store .. B-side. A-side and B-side. iTunes Store. iTunes Store. The song featured a physical release in the United Kingdom in early August 2006 .. United Kingdom. United Kingdom
not_related.