Data contain repeated values of variable suspect.  Each suspect is viewed by multiple witnesses and each witness (1) declines to identify a suspect, (2) chooses a foil, or (3) chooses the suspect.
Fictional data inspired by Wright, D.B and Sparks, A.T., 1994, "Using multilevel multinomial regression to analyse line-up data", _Multilevel Modeling Newsletter_, Vol. 6, No. 1