Jean-Claude to tire on day where French lieutenant, and god of very small stature, head to valley of note, by Etna, perhaps, with prisoner and one old, half-cut sister with lung disease (45)
Pneu - tire (French)
Mon - day
ou - where (French)
lt - lieutenant
Ra - god
microscopic - of very small stature
Silico(n)- valley of note
volcano - Etna, perhaps
con - prisoner
I - one
o - old
sis - half-cut sis(ster)
lung disease - def.