question: What favorable developments occurred for Prussia in Hanover ?
answer: Duke Ferdinand of Brunswick , regrouped his army and launched a series of offensives that drove the French back across the River Rhine .
turker_answer: Duke Ferdinand of Brunswick , regrouping his army and launching a series of offensives that drove the French back across the River Rhine was a favorable developments for Prussia in Hanover .
rule-based: Duke Ferdinand of Brunswick , regrouped his army and launched a series of offensives that drove the French back across the River Rhine occurred for Prussia in Hanover .