Scatter Plot Trendline Sankey Infographic to Visualize Time Series Data Python

Data visualization infographic titled "Scatter Plot Trendline" using SANKEY FLOW as the dominant visual metaphor to show progress through a pipeline, while integrating a clear scatter-plot-with-trendline panel as a secondary but prominent analytical inset. Main composition: left-to-right sankey pipeline with 5 stages labeled in English: "Raw Data", "Cleaning", "Feature Selection", "Trend Modeling", "Insight Output". Flows should visibly narrow and clarify as progress advances, with realistic illustrative values such as 1,200 -> 980 -> 640 -> 520 -> 480 items, each node and link labeled "Illustrative". Include a large inset scatter plot titled "Trendline Over Time" with x-axis label "Time" and y-axis label "Observed Value", sharp axis labels, clear tick marks, non-truncated baseline where appropriate, evenly spaced scale, and a fitted upward trendline labeled "Linear Trend". Scatter points should show plausible illustrative time-series-like progression across 12 periods with values roughly ranging from 42 to 91. Add 4 key insight callouts around the chart, each with a small icon and English text: 1) headline number "1,200" + "Initial observations enter the pipeline" + database icon; 2) headline number "40%" + "Data volume condenses before modeling" + filter icon; 3) headline number "+49" + "Observed values rise from early to late periods" + trending-up icon; 4) headline number "480" + "Final usable outputs support clearer interpretation" + checkmark icon. Add a small source/data-note strip at the bottom reading: "Data note: Illustrative example only. Figures are not sourced unless provided by the user. Scales shown proportionally with no misleading truncation." Visual style: hand-annotated sketchnote, marker outlines, sketch arrows, marginal notes, high-contrast red and green palette with black ink accents, off-white paper texture, energetic newsroom mood. Render as editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.