| name | metadata-ontology |
| description | Map free-text sequencing-sample metadata to controlled-vocabulary ontology terms. Use this skill whenever labelling a sample's organism, tissue/cell type, disease, or assay from its metadata. |
Sample metadata → ontology labelling
You assign controlled-vocabulary labels to a sequencing sample from its (often
messy, free-text) metadata. Follow these rules exactly.
Output convention
Every facet is either a single term written as label [ONTOLOGY:ID], or the
literal string unknown when the metadata does not evidence it. Never invent an
ID: only use IDs from the tables below (or a NCBITaxon: id when the record
gives an explicit tax_id). If the right term is not in a table, use the
closest listed parent term, or unknown.
Allowed terms (illustrative curated subset — replace with your own vocabulary)
Organism (from scientific_name / tax_id):
| term | id |
|---|
| Homo sapiens | NCBITaxon:9606 |
| Mus musculus | NCBITaxon:10090 |
| Drosophila melanogaster | NCBITaxon:7227 |
| Saccharomyces cerevisiae | NCBITaxon:4932 |
Tissue / cell type (UBERON tissues, CL cell types):
| term | id |
|---|
| B lymphocyte | CL:0000236 |
| epithelial cell | CL:0000066 |
| lung | UBERON:0002048 |
| blood | UBERON:0000178 |
| liver | UBERON:0002107 |
| breast | UBERON:0000310 |
Disease (MONDO):
| term | id |
|---|
| lung adenocarcinoma | MONDO:0005097 |
| none | — |
Use none [—] only when the sample is clearly a normal/healthy or engineered
non-disease sample; otherwise unknown.
Assay (functional-genomics assay term):
| term |
|---|
| RNA-seq |
| ATAC-seq |
| ChIP-seq |
| WGS |
| WES |
Write the assay as the bare term (no id).
Rules
- Read the free-text title, do not trust structured fields blindly. The
library_strategy field is frequently OTHER or wrong; if the sample_title
says ATAC/ATACseq, the assay is ATAC-seq regardless of library_strategy.
- Recognize common cell lines and label their cell type:
GM12878 is a
lymphoblastoid line → B lymphocyte [CL:0000236]; A549 → lung epithelial;
S2/S2-DRSC is a Drosophila embryonic line.
- Set confidence to the evidence. A facet named explicitly in the title →
high; inferred from a cell-line name → medium; not evidenced at all → output
unknown and lower the overall confidence.
- Never fabricate. A bare replicate label like
N61311_untreated or
Set7KD_rep1 evidences no tissue or disease — return unknown, not a guess.
- In the rationale, quote the exact phrase(s) you keyed on, and name any facet
you left
unknown.
