new_contents: from indra.statements import *
  
  def get_statements():
      statements = []
  
      egf = Agent('EGF')
      egfr = Agent('EGFR')
      st = Complex([egf, egfr])
      statements.append(st)
  
      egfre = Agent('EGFR', bound_conditions=[BoundCondition(egf, True)])
      egfre = Agent('EGFR', bound_conditions=[BoundCondition(egf, True)])
      st = Complex([egfre, egfre])
      statements.append(st)
  
      egfrdimer = Agent('EGFR', bound_conditions=[BoundCondition(egfr, True)])
      st = Transphosphorylation(egfrdimer, 'Y')
      statements.append(st)
  
      egfrpY = Agent('EGFR', mods=[ModCondition('phosphorylation', 'Y')])
      grb2 = Agent('GRB2')
      st = Complex([egfrpY, grb2])
      statements.append(st)
  
  
      grb2bound = Agent('GRB2', bound_conditions=[BoundCondition(egfr, True)])
      sos1 = Agent('SOS1')
      st = Complex([grb2bound, sos1])
      statements.append(st)
  
      hras = Agent('HRAS')
      kras = Agent('KRAS')
      nras = Agent('NRAS')
      gdp = Agent('GDP')
      for ras in [hras, kras, nras]:
          st = Complex([ras, gdp])
          statements.append(st)
  
      sos1bound = Agent('SOS1', bound_conditions=[BoundCondition(grb2, True)])
      hras_gdp = Agent('HRAS', bound_conditions=[BoundCondition(gdp, True)])
      kras_gdp = Agent('KRAS', bound_conditions=[BoundCondition(gdp, True)])
      nras_gdp = Agent('NRAS', bound_conditions=[BoundCondition(gdp, True)])
      for ras_gdp in [hras_gdp, kras_gdp, nras_gdp]:
          st = Complex([sos1bound, ras_gdp])
          statements.append(st)
          st = ActiveForm(ras_gdp, 'activity', False)
          statements.append(st)
  
  
      hras_bound = Agent('HRAS', bound_conditions=[BoundCondition(sos1, True)])
      kras_bound = Agent('KRAS', bound_conditions=[BoundCondition(sos1, True)])
      nras_bound = Agent('NRAS', bound_conditions=[BoundCondition(sos1, True)])
      sos1bound = Agent('SOS1', bound_conditions=[BoundCondition(grb2, True)])
      for ras_bound in [hras_bound, kras_bound, nras_bound]:
          st = Complex([sos1bound, ras_bound])
          statements.append(st)
  
  
      gtp = Agent('GTP')
      hras_gtp = Agent('HRAS', bound_conditions=[BoundCondition(gtp, True)])
      kras_gtp = Agent('KRAS', bound_conditions=[BoundCondition(gtp, True)])
      nras_gtp = Agent('NRAS', bound_conditions=[BoundCondition(gtp, True)])
      braf = Agent('BRAF')
      for ras_gtp in [hras_gtp, kras_gtp, nras_gtp]:
          st = Complex([ras_gtp, braf])
          statements.append(st)
          st = ActiveForm(ras_gtp, 'activity', True)
          statements.append(st)
  
      hras_braf = Agent('BRAF', bound_conditions=[BoundCondition(hras, True)])
      kras_braf = Agent('BRAF', bound_conditions=[BoundCondition(kras, True)])
      nras_braf = Agent('BRAF', bound_conditions=[BoundCondition(nras, True)])
      for braf1 in [hras_braf, kras_braf, nras_braf]:
          for braf2 in [hras_braf, kras_braf, nras_braf]:
              st = Complex([braf1, braf2])
              statements.append(st)
  
      braf_bound = Agent('BRAF', bound_conditions=[BoundCondition(braf, True)])
      st = Transphosphorylation(braf_bound)
      statements.append(st)
  
      braf_phos = Agent('BRAF', mods=[ModCondition('phosphorylation')])
      mek1 = Agent('MAP2K1')
      mek2 = Agent('MAP2K2')
      st = ActiveForm(braf_phos, 'kinase', True)
      statements.append(st)
      st = Phosphorylation(braf_phos, mek1)
      statements.append(st)
      st = Phosphorylation(braf_phos, mek2)
      statements.append(st)
  
      mek1_phos = Agent('MAP2K1', mods=[ModCondition('phosphorylation')])
      mek2_phos = Agent('MAP2K2', mods=[ModCondition('phosphorylation')])
      mapk1 = Agent('MAPK1')
      mapk3 = Agent('MAPK3')
      st = ActiveForm(mek1_phos, 'kinase', True)
      statements.append(st)
      st = ActiveForm(mek2_phos, 'kinase', True)
      statements.append(st)
      st = Phosphorylation(braf_phos, mek1)
      statements.append(st)
      st = Phosphorylation(braf_phos, mek2)
      statements.append(st)
      for mek in [mek1_phos, mek2_phos]:
          for erk in [mapk1, mapk3]:
              st = Phosphorylation(mek, erk)
  
      for st in statements:
          st.belief = 1
          st.evidence.append(Evidence(source_api='assertion'))
      return statements
  
subject: Add prior RAS model as INDRA Statements