Failed to unzip the genotype.vcf.gz in step 2: Population Stratification

[giraffevzz]

Hi,

Because of the limited memory of laptop's disk, it always failed to unzip the ALL.2of4intersection.20100804.genotypes.vcf.gz file which was downloaded from the url. Is there any smaller sample data that can substitute the 20100804 file to finish this tutorial project? (Although there might be no significant result or fake asscociation)