t;- lm_split %&gt;% 
  select(splits, id)
simple_split
## # # Monte Carlo cross-validation (0.75/0.25) with 1 resamples  
## # A tibble: 1 x 2
##   splits             id              
## * &lt;list&gt;             &lt;chr&gt;           
## 1 &lt;split [2.2K/732]&gt; train/test split
```

---
class: inverse

# üêà, ‚ö°

How can you return just the contents of the first cell in splits? Write the code.


```r
simple_split
## # # Monte Carlo cross-validation (0.75/0.25) with 1 resamples  
## # A tibbl