I want to know the answer to the following question:
How many annelid genes did Torsten Struck compare for a cross-check?
All the background I'm provided with is that "In 2007 Torsten Struck and colleagues compared 3 genes in 81 taxa, of which 9 were outgroups, in other words not considered closely related to annelids but included to give an indication of where the organisms under study are placed on the larger tree of life.". Is that enough to answer the question?
Answer: no