With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: In 1965, Mother McCree's Uptown Jug Champions evolved into the Warlocks, with the addition of Phil Lesh on bass guitar and Bill Kreutzmann on percussion. However, the band discovered that another group (which would later become the Velvet Underground) had recently selected the same name. In response, Garcia came up with "Grateful Dead" by opening a Funk &amp; Wagnalls dictionary to an entry for "Grateful dead". The definition for "Grateful dead" was "a dead person, or his angel, showing gratitude to someone who, as an act of charity, arranged their burial". The band's first reaction was approval. Garcia later explained the group's reaction: "I liked it really, I just found it to be really powerful. [Bob] Weir liked it, [Bill] Kreutzmann liked it and everybody really wanted to hear about it." Since they liked the name, it quickly spread by word of mouth, and soon became their official title.
text_B: Would the band members likely have tried to think up another name for their band before word of mouth spread?
NO.