If you want to use the annotations provided by the organizers during the CHALLENGE #2 // Phase 2, you can access it from your function "program" (defined in the file "program.R") as a global variable named "met.annot" ("met[dot]annot"). This variable is a data.frame :
> dim(met.annot)
[1] 865918 51
> colnames(met.annot)
[1] "Index"
[2] "TargetID"
[3] "ProbeID_A"
[4] "ProbeID_B"
[5] "ILMNID"
[6] "NAME"
[7] "ADDRESSA_ID"
[8] "ALLELEA_PROBESEQ"
[9] "ADDRESSB_ID"
[10] "ALLELEB_PROBESEQ"
[11] "INFINIUM_DESIGN_TYPE"
[12] "NEXT_BASE"
[13] "COLOR_CHANNEL"
[14] "FORWARD_SEQUENCE"
[15] "GENOME_BUILD"
[16] "CHR"
[17] "MAPINFO"
[18] "SOURCESEQ"
[19] "STRAND"
[20] "UCSC_REFGENE_NAME"
[21] "UCSC_REFGENE_ACCESSION"
[22] "UCSC_REFGENE_GROUP"
[23] "UCSC_CPG_ISLANDS_NAME"
[24] "RELATION_TO_UCSC_CPG_ISLAND"
[25] "PHANTOM4_ENHANCERS"
[26] "PHANTOM5_ENHANCERS"
[27] "DMR"
[28] "450K_ENHANCER"
[29] "HMM_ISLAND"
[30] "REGULATORY_FEATURE_NAME"
[31] "REGULATORY_FEATURE_GROUP"
[32] "GENCODEBASICV12_NAME"
[33] "GENCODEBASICV12_ACCESSION"
[34] "GENCODEBASICV12_GROUP"
[35] "GENCODECOMPV12_NAME"
[36] "GENCODECOMPV12_ACCESSION"
[37] "GENCODECOMPV12_GROUP"
[38] "DNASE_HYPERSENSITIVITY_NAME"
[39] "DNASE_HYPERSENSITIVITY_EVIDENCE_COUNT"
[40] "OPENCHROMATIN_NAME"
[41] "OPENCHROMATIN_EVIDENCE_COUNT"
[42] "TFBS_NAME"
[43] "TFBS_EVIDENCE_COUNT"
[44] "METHYL27_LOCI"
[45] "METHYL450_LOCI"
[46] "CHROMOSOME_36"
[47] "COORDINATE_36"
[48] "SNP_ID"
[49] "SNP_DISTANCE"
[50] "SNP_MINORALLELEFREQUENCY"
[51] "RANDOM_LOCI"