Step 1: Select rows where 'family' is 'unassigned'.
| family |
baltimore_group |
envelopment |
virion_shape |
replication_site |
| adenoviridae |
group i |
non - enveloped |
icosahedral |
nucleus |
| herpesviridae |
group i |
enveloped |
complex |
nucleus |
| papillomaviridae |
group i |
non - enveloped |
icosahedral |
nucleus |
| polyomaviridae |
group i |
non - enveloped |
icosahedral |
nucleus |
| poxviridae |
group i |
enveloped |
complex |
cytoplasm |
| hepadnaviridae |
group vii |
enveloped |
icosahedral |
nucleus |
| parvoviridae |
group ii |
non - enveloped |
icosahedral |
nucleus |
| astroviridae |
group iv |
non - enveloped |
icosahedral |
cytoplasm |
| caliciviridae |
group iv |
non - enveloped |
icosahedral |
cytoplasm |
| picornaviridae |
group iv |
non - enveloped |
icosahedral |
cytoplasm |
| coronaviridae |
group iv |
enveloped |
helical |
cytoplasm |
| flaviviridae |
group iv |
enveloped |
icosahedral |
cytoplasm |
| togaviridae |
group iv |
enveloped |
icosahedral |
cytoplasm |
| hepeviridae |
group iv |
enveloped |
icosahedral |
cytoplasm |
| retroviridae |
group vi |
enveloped |
icosahedral |
nucleus |
| orthomyxoviridae |
group v |
enveloped |
helical |
nucleus |
| arenaviridae |
group v |
enveloped |
helical |
cytoplasm |
| bunyaviridae |
group v |
enveloped |
helical |
cytoplasm |
| filoviridae |
group v |
enveloped |
helical |
cytoplasm |
| paramyxoviridae |
group v |
enveloped |
helical |
cytoplasm |
| rhabdoviridae |
group v |
enveloped |
helical , bullet shaped |
cytoplasm |
| unassigned |
group v |
enveloped |
spherical |
nucleus |
| reoviridae |
group iii |
non - enveloped |
icosahedral |
cytoplasm |
Step 2: Use a `CASE` statement to return TRUE if the number of rows is equal to 1, otherwise return FALSE.
| family |
baltimore_group |
envelopment |
virion_shape |
replication_site |
| unassigned |
group v |
enveloped |
spherical |
nucleus |
Prediction: TRUE