Tyrion then confronted Tywin and killed him with a crossbow before he escaped the Red Keep and fled across the Narrow Sea.
I'm not clear about which one is 'he'.
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Why is this sentence improperly formatted? Brooklyn with assistance can measure perimeter and area.

anonymousimproperly formatted

'formatted' is not a term we see with regard to sentences or grammar.

Are you asking about punctuation? Word order? Something else?