The scientists are working to avoid a repetition of the lunar rock fiasco 30 years ago, in which quarantine measures were breached.
(quarantine measures; were breached; L:the lunar rock fiasco 30 years ago) (The scientists; are working; to avoid a repetition of the lunar rock fiasco 30 years ago) Context(The scientists are working,List([0, 26))):(The scientists; are working to avoid; a repetition of the lunar rock fiasco 30 years ago)
The scientists are working,List([0, 26))
quarantine measures The scientists The scientists
were breached are working are working to avoid
L:the lunar rock fiasco 30 years ago
to avoid a repetition of the lunar rock fiasco 30 years ago
a repetition of the lunar rock fiasco 30 years ago