documentclass{article}
begin{document}
  setlength{parindent}{0pt}
  parshape=3 5mm 40mm 10mm 35mm 15mm 30mm
  This is sentence 1. This is sentence 2. This is sentence 3. This is sentence 4. This is sentence 5.
end{document}

documentclass{article}
usepackage{tikz}
begin{document}
  begin{tikzpicture}
    path node[draw,text width=50mm]
      { setlength{parindent}{0pt}
        parshape=3 5mm 40mm 10mm 35mm 15mm 30mm
        This is sentence 1. This is sentence 2. This is sentence 3. This is sentence 4. This is sentence 5.
      };
  end{tikzpicture}
end{document}