我们顺着胡同往学校去，他沿着树枝跳到东边院子往学校走，比我们还早到几分钟。
B-Person I-Person O O B-Location I-Location O B-Location I-Location O O B-Thing O O B-Thing I-Thing O O B-Location I-Location I-Location I-Location O B-Location I-Location O O O B-Person I-Person O O O B-Metric I-Metric I-Metric O