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// {{{ file: kra.cc | time: 11:48 16.03.2024
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>

#define each(...)    for (auto& __VA_ARGS__)
#define rep(i, b, e) for (int i = (b); i <= (e); i++)
#define rev(i, b, e) for (int i = (e); i >= (b); i--)
#define mp make_pair
#define mt make_tuple
#define x first
#define y second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define endl '\n'
#define tC template<class

using namespace std;

tC T> using V = vector<T>;
tC T1, class T2> using P = pair<T1,T2>;
tC T, class C=greater<T>> using PQ = priority_queue<T,V<T>,C>;
tC T> int sz(const T& a) { return (int)a.size(); }
tC T> bool amin(T& a, T b) { return b < a ? a = b, 1 : 0; }
tC T> bool amax(T& a, T b) { return b > a ? a = b, 1 : 0; }

using ll = long long;
using pii = P<int,int>;
using pll = P<ll,ll>;
using vi = V<int>;
using vl = V<ll>;
using vs = V<string>;
using vpi = V<pii>;
using vpl = V<pll>;

const int oo = 1e9 + 1;
const ll OO = ll(1e18) + 1;

auto now() { return chrono::high_resolution_clock::now().time_since_epoch().count(); }
mt19937 rnd(4488);
tC T> T rand(T lo, T hi) { return uniform_int_distribution<T>{lo,hi}(rnd); }

struct Debug {
#ifdef SPONGE
  tC T>Debug operator<<(const T& x) {
    cerr<<"\033[1;33m"<<x<<"\033[0m";
#else
  tC T>Debug operator<<(const T&) {
#endif
    return *this;
  }
} dbg;
#define $(x) #x<<'='<<(x)<<' '

void boost()
{
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.precision(15);
  cout.setf(ios::fixed,ios::floatfield);
  cerr.precision(15);
  cerr.setf(ios::fixed,ios::floatfield);
}

namespace { void solve(); }
// }}}

int main()
{
  boost();
  //rnd.seed(now());
  int t=1;
  //cin>>t;
  rep(i,1,t){
    //cout<<"Case #"<<i<<": ";
    solve();
  }
}

namespace {

const int N=1e6+10;
const int mod=1e9+7;

ll pot(ll a,ll b)
{
  ll c=1;
  while(b>0){
    if(b%2==1) c=a*c%mod;
    a=a*a%mod;
    b/=2;
  }
  return c;
}

ll odw(ll a)
{
  return pot(a,mod-2);
}

int n,drze[1<<22],lew[N],pra[N];
pii polki[N];
vi up[N];
ll ile[N];

void ustaw(int l,int p,int x)
{
  l+=(1<<21); p+=(1<<21);
  while(l<=p){
    drze[l]=x; drze[p]=x;
    l=(l+1)/2; p=(p-1)/2;
  }
}

int pytaj(int i)
{
  int odp=0;
  i+=(1<<21);
  while(i>=1) {amax(odp,drze[i]); i/=2;}
  return odp;
}

/*
int spotkaj(int l,int p)
{
  while(l!=p){
    if(l>p) l=pra[l]; else p=lew[p];
  }
  return l;
}
*/

bool comp(int i,int j)
{
  return polki[i].y<polki[j].y;
}

int pi[N],akt[N],wspolny[N],anc[20][N];
vi dzieci[N],pytania[N];

void odpowiedz(int i)
{
  int p=pra[i];
  if(akt[p]){
    wspolny[i]=p;
  }
  else{
    rev(k,0,19) if(!akt[anc[k][p]]) p=anc[k][p];
    wspolny[i]=lew[p];
  }
}

void dfs(int v)
{
  akt[v]=1;
  each(p:pytania[v]) odpowiedz(p);
  each(u:dzieci[v]) dfs(u);
}

void solve()
{
  cin>>n;
  rep(i,1,n){
    cin>>polki[i].x>>polki[i].y;
    int l=pytaj(polki[i].x),p=pytaj(polki[i].y);
    lew[i]=l; pra[i]=p;
    up[l].pb(i); up[p].pb(i);
    ustaw(polki[i].x,polki[i].y,i);
  }

  rep(i,1,n) pi[i]=i;
  sort(pi+1,pi+n+1,comp);
  rep(i,1,n) dzieci[pra[pi[i]]].pb(pi[i]);

  rep(i,1,n) pytania[lew[i]].pb(i);

  rep(i,1,n) anc[0][i]=lew[i];
  rep(k,0,18) rep(i,1,n) anc[k+1][i]=anc[k][anc[k][i]];

  dfs(0);

  rep(i,1,n) ile[i]=1;
  rev(i,1,n){
    each(v:up[i]) ile[i]=(ile[i]+ile[v])%mod;
    int s=wspolny[i];
    //assert(s==spotkaj(lew[i],pra[i]));
    ile[s]=(ile[s]-ile[i]+mod)%mod;
  }

  ll odp=0;
  rep(i,1,n) odp=(odp+odw(ile[i]))%mod;
  cout<<odp<<endl;
}

}