of / a / try / grand / is / to / decide / is / purpose / if / evidence / there / to / a / jury / sufficient / person / for / one / a / crime.
One purpose of a grand jury is to decide if there is sufficient evidence to try a person for a crime.
One purpose of a grand jury is to try if there is sufficient evidence to decide a person for a crime.
One purpose of a grand jury is to decide if sufficient evidence is there to try a person for a crime.
One purpose of a grand jury is to decide sufficient evidence if is there to try a person for a crime.