Of the Heart, of the Soul and of the Cross featured the international hit "Set Adrift on Memory Bliss", which sampled the Spandau Ballet song "True", and featured a cameo by Spandau Ballet singer Tony Hadley in the music video of the song. "Set Adrift on Memory Bliss" hit #1 the week of November 30, 1991, and holds the distinction of being the first #1 song on the Billboard Hot 100 chart following the introduction of Nielsen SoundScan to the chart. The song also reached #3 in the United Kingdom. "Paper Doll", which was one of the early singles Island released in the United Kingdom, was released in the US as a follow-up to "Set Adrift on Memory Bliss", and peaked at #28 in early 1992. "Paper Doll" is said well over 100 times in the song, which makes it second only to MC Hammer's "Pray", which holds the record for the most times a title is repeated in a US Top 40 hit (147).  With the success of their debut album, the band parted company with their manager Nick Hemmings and embarked on a world tour. During this world tour, Prince Be gave an interview to Details magazine in which he expressed skepticism of rapper KRS-One's activism: "KRS-One wants to be a teacher, but a teacher of what?" KRS-One and his crew, Boogie Down Productions, responded by storming a P.M. Dawn concert, forcing the group off the stage and performing their songs "I'm Still #1" and "The Bridge Is Over". Defending his actions to USA Today's James T. Jones IV, KRS-One remarked, "I answered his question. 'A teacher of what?' I'm a teacher of respect."  In 1992, P.M. Dawn appeared on the Red Hot Organization's compilation CD Red Hot + Dance, contributing the Richie Rich Mix of "Set Adrift on Memory Bliss". The album, featuring George Michael and Madonna among others, was meant to raise money and awareness in support of the AIDS epidemic.

Answer this question "What did he say about KRS-One's activism?" by extracting the answer from the text above.
"KRS-One wants to be a teacher, but a teacher of what?"