Complex sentence: When a reporter asked how an eleven year old could do such damage, Sales-Halbergsen threw a tantrum, when asked why he refused to answer the question, he remarked, "I'm not eleven, I am eleven and a half!".
Split into simpler sentences: When a reporter asked how an eleven year old could do such damage, Sales-Halbergsen threw a tantrum. When asked why he refused to answer the question, he snapped, "I'm not eleven, I am eleven and a half!".