=== "1"
```python
text = "Sydrome myéloprolifératif"
doc = nlp(text)
spans = doc.spans["leukemia"]

spans
# Out: [myéloprolifératif]
```

=== "2"
```python
text = "Sydrome myéloprolifératif bénin"
doc = nlp(text)
spans = doc.spans["leukemia"]

spans
# Out: []
```

=== "3"
```python
text = "Patient atteint d'une LAM"
doc = nlp(text)
spans = doc.spans["leukemia"]

spans
# Out: [LAM]
```

=== "4"
```python
text = "Une maladie de Vaquez"
doc = nlp(text)
spans = doc.spans["leukemia"]

spans
# Out: [Vaquez]
```