code: def xs(cat):
      return [(cat, -0.3), (cat, -0.1), (cat, 0.1), (cat, 0.3)]
  
imports: from bokeh.layouts import column
  from bokeh.models import CustomJS, Slider
  from bokeh.plotting import figure, show
label_desc: Use image node_id 1 for calling a global function with example usage: xs(cat) and returns: list