TNT is a Norwegian heavy metal band from Trondheim, formed in 1982. The band has released twelve studio albums, three EPs and three live albums while going through numerous line-up changes since its formation. Guitarist Ronni Le Tekrø is the only consistent member of TNT. TNT has sold between 4-5 million albums worldwide as of 2016.
Tekro plays lead guitar. 
I'm not sure why it had difficulty.  The paragraph reads "Guitarist Ronni Le Tekrø is the only consistent member of TNT."   he could play rhythm or lead, but it doesn't state which.  So the statement could be true or not. 
( z1 play :ARG0 ( z2 person :name ( z3 name :op "Tekro" ) ) :ARG1 ( z4 guitar :ARG0-of ( z5 lead ) ) )